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SiteDestinationTypeDepthLevelCurrentBest
1,000 Steps Iconic staircase entry, star coral hills, dependable turtles BonaireBonaire Reef 5–30 m Beginner Mild
Abu Dabbab Grazing green turtles at close range; the chance of a dugong… Marsa Alam & the Deep SouthEgypt Shore 2–18 m Beginner None Mar, Apr, May, Jun, Sep, Oct, Nov
Admiralty Anchor Historic anchor grown into the reef, light-filled swim-throughs, huge… Coral Sea & Osprey ReefAustralia Reef 8–30 m Intermediate Mild Jun, Jul, Sep, Oct, Nov, Dec
Aeolus Steel canyons full of sand tigers, open broken-wreck structure… North Carolina Outer BanksUnited States Wreck 24–34 m Advanced Moderate Jun–Sep
Agincourt Reefs Shelf-edge clarity on a day trip, Maori wrasse, varied moorings from… Cairns & the Ribbon ReefsAustralia Reef 5–25 m Beginner Mild Jun–Nov
Aida A deep, coral-sheathed hull on a dramatic slope; pairing with the… Brothers, Daedalus & St John'sEgypt Wreck 30–60 m Advanced Moderate May, Jun, Jul, Sep, Oct, Nov
Airplane Wreck (Tuble) A photogenic aircraft skeleton, resident frogfish, easy add-on to the… MoalboalPhilippines Artificial reef 15–24 m Intermediate Mild Dec–May
Akitsushima Genuine warship history, the seaplane crane, atmospheric side-lying… CoronPhilippines Wreck 20–38 m Advanced Mild Nov–Apr
Alice in Wonderland Giant mushroom coral heads, sand avenues with garden eels, uncrowded… British Virgin IslandsBritish Virgin Islands Reef 10–28 m Intermediate Mild
Aliwal Baited Shark Dive Dozens of oceanic blacktips; seasonal tiger sharks at drifting close… Aliwal Shoal & UmkomaasSouth Africa Blue water 0–15 m Intermediate Moderate Dec–May
Amos Rock Giant sea fans, resident Napoleon wrasse, painterly wall scenery Tubbataha ReefsPhilippines Wall 5–40 m Intermediate Moderate Mar–Jun
Angarosh Silvertip encounters; hammerhead schools off the deep plateau; a reef… Port Sudan & SanganebSudan Pinnacle 10–45 m Advanced Strong Feb, Mar, Apr, May, Nov
Angel City Textbook double reef, queen angelfish, sand-channel ray traffic BonaireBonaire Reef 5–27 m Beginner Mild
Angel's Window The fan-framed swim-through; pygmy seahorses; a reef interlude amid… Lembeh StraitIndonesia Pinnacle 5–30 m Intermediate Moderate
Anilao Pier Nocturnal octopus parade, frogfish on artificial perches, long… AnilaoPhilippines Muck 2–14 m Beginner None Nov–Apr
Annie's Bommie Soft-coral density at close range; anthias swarms against blue water… Taveuni & Rainbow ReefFiji Reef 8–22 m Intermediate Mild May–Oct
Anse Chastanet Reef Seahorses and frogfish on demand, shore access inside the reserve… Saint LuciaSaint Lucia Reef 2–40 m Beginner None
Aquarium (Mnemba) Fishbowl density at snorkel depth; superb for training and night dives Zanzibar & MnembaTanzania Reef 4–18 m Beginner None Jan, Feb, Jul, Aug, Sep, Oct, Dec
Arnarnesstrytur Multiple venting cones at friendly depths, lumpfish and wolffish… Silfra & IcelandIceland Pinnacle 10–25 m Intermediate Mild May–Sep
Asho's Gap Manta cleaning station in easy depth, queuing reef sharks, tight… Ningaloo ReefAustralia Reef 6–15 m Beginner Mild Apr–Oct
Avatoru Pass Close silvertip shark passes; a fast, clean drift; alternation with… RangiroaFrench Polynesia Channel 10–35 m Advanced Strong Nov–Apr
Ave Maria Rocks Reliable turtles and resting whitetips in granite gullies SeychellesSeychelles Pinnacle 6–20 m Beginner Mild Mar, Apr, May, Oct, Nov
B-17 Black Jack A complete Flying Fortress on open sand; turret and cockpit details… Milne BayPapua New Guinea Wreck 42–48 m Technical Mild
Babylon The freestanding pinnacle, hanging black-coral gardens, true oceanic… Grand CaymanCayman Islands Wall 12–40 m Intermediate Mild Apr–Aug
Baixa do Ambrosio Devil-ray trains at snorkel depth, passing loggerheads, easy profile… The AzoresPortugal Seamount 8–30 m Intermediate Moderate Jul–Sep
Bajo Alcyone The archetypal hammerhead cleaning station, marbled rays, blue-water… Cocos IslandCosta Rica Seamount 25–40 m Advanced Strong Jun–Nov
Bajo Veinte Baitball crowns, whitetips in the gullies, cool-season pelagic… CoibaPanama Pinnacle 12–30 m Intermediate Moderate
Bajo del Diablo (Cano Island) Granite pinnacle topography, barracuda walls, whale song in season… Costa Rica Pacific CoastCosta Rica Pinnacle 12–28 m Intermediate Moderate
Bajo del Monstruo The chance, never the promise, of Odontaspis ferox; deep-bank… MalpeloColombia Seamount 30–60 m Technical Strong
Banana Reef Classic overhang-and-canyon terrain; sweetlips schools; Napoleon… North & South Malé AtollsMaldives Reef 5–30 m Intermediate Moderate Dec–Apr
Bari Reef Record-setting fish diversity, effortless entry, superb night diving BonaireBonaire Reef 3–25 m Beginner None
Barracuda Lake A 38 °C thermocline you can feel like a wall, cathedral rock… CoronPhilippines Freshwater 3–35 m Intermediate None Nov–May
Barracuda Point The barracuda tornado, shark traffic in numbers, dawn bumphead parades Sipadan & MabulMalaysia Wall 5–40 m Advanced Strong Apr–Aug
Basura Hairy frogfish and rare octopus, junk-as-habitat safari, guide… AnilaoPhilippines Muck 5–22 m Beginner Mild Nov–May
Batu Bolong Wall-to-wall fish in the lee; hunting tuna and trevally at the… KomodoIndonesia Pinnacle 3–40 m Advanced Extreme Apr–Nov
Batu Kapal Multi-pinnacle architecture; fusilier and triggerfish storms; pelagic… Banda Sea & AmbonIndonesia Pinnacle 8–40 m Intermediate Moderate Mar, Apr, Sep, Oct, Nov
Bianca C Cruise liner scale, the famous pool deck, eagle rays in the blue GrenadaGrenada Wreck 28–50 m Advanced Moderate
Big Brother Dawn thresher encounters; fall oceanic whitetips beneath the boats… Brothers, Daedalus & St John'sEgypt Wall 5–40 m Advanced Strong May, Jun, Jul, Sep, Oct, Nov
Bjarnagja Halocline light effects, sheer lava walls, a wilder alternative to… Silfra & IcelandIceland Shore 3–18 m Intermediate None May–Sep
Black Coral I & II Living black-coral thickets, tarpon under the ledges, sharks… Jardines de la ReinaCuba Wall 15–35 m Intermediate Mild Dec–Apr
Black Forest Shallow black coral under dramatic overhangs, whale song in season Turks and CaicosTurks and Caicos Islands Wall 8–40 m Intermediate Mild
Black Hills Swirling jack and baitfish schools, eagle rays on the current line… UtilaHonduras Seamount 12–40 m Intermediate Moderate Mar, Apr, May, Aug, Sep
Black Rock Oceanic mantas at close quarters, marbled rays stacked in the ledges… Mergui ArchipelagoMyanmar Pinnacle 5–40 m Advanced Moderate Dec–Apr
Blade Knife-edge ridge topography; fan and sponge growth on the crest; a… WakatobiIndonesia Seamount 6–35 m Intermediate Moderate Mar–Nov
Blonde Rock Fish-stacked ledges on an isolated seamount, regular eagle rays British Virgin IslandsBritish Virgin Islands Pinnacle 4–18 m Intermediate Moderate
Blue Cave The blue glow itself, glassy sweeper swarms, easy cape reef outside… Okinawa & the Kerama IslandsJapan Cave 2–25 m Beginner Mild Apr, May, Jun, Oct, Nov
Blue Channel Coral arches and cavelets, dense overhang life, first-rate night… RoatánHonduras Channel 5–15 m Beginner Mild Mar–Aug
Blue Corner Gray reef sharks stacked in the current; the resident Napoleon wrasse… PalauPalau Wall 8–30 m Intermediate Strong Nov–Apr
Blue Hole The archway exit into blue, Azure Window boulder field, chimney… Malta & GozoMalta Blue hole 5–40 m Intermediate Mild May–Oct
Blue Hole The Bells chimney entry; the saddle crossing into blue light… DahabEgypt Blue hole ~6 m Intermediate None Apr, May, Jun, Sep, Oct, Nov
Blue Holes Light shafts through the skylights; the arched exits onto the wall… PalauPalau Blue hole 2–35 m Intermediate Mild Nov–Apr
Blue Lagoon Blacktip reef sharks in gin-clear shallows; the aquamarine pool and… RangiroaFrench Polynesia Reef 1–5 m Beginner Mild
Blue Lagoon (Padang Bai) Leaf scorpionfish and frogfish density; easy conditions with real… Bali & Nusa PenidaIndonesia Reef 3–20 m Beginner Mild Apr–Nov
Blue Magic Oceanic mantas at cleaning stations; wobbegongs on the summit… Raja AmpatIndonesia Pinnacle 7–30 m Advanced Strong Oct–Apr
Blue Maomao Arch Wall-to-wall blue maomao, cathedral light through the arch, easy depth Poor Knights IslandsNew Zealand Reef 3–15 m Beginner Mild Feb–Jun
Bonegi I (Hirokawa Maru) A shore-entry WWII transport; coral-covered upper hull rich in fish… Solomon IslandsSolomon Islands Wreck 3–55 m Intermediate Mild
Boo Windows The window swim-throughs; soft-coral walls; pygmy seahorses and… Raja AmpatIndonesia Reef 3–30 m Intermediate Moderate Oct–Apr
Brissare Rocks Rope-like fusilier streams; turtle traffic; honest granite topography SeychellesSeychelles Pinnacle 8–24 m Intermediate Moderate Mar, Apr, May, Oct, Nov
Bristol Blenheim Bomber An identifiable WWII bomber, engines and wings in place, a focused… Malta & GozoMalta Wreck 38–42 m Technical Mild May–Oct
Broken Rock The fan-lined canyon swim; turtle and moray terraces around the rim Ari AtollMaldives Pinnacle 12–30 m Intermediate Moderate Dec–Apr
Browning Wall Total invertebrate cover, winter 20 m-plus visibility, dens of… British ColumbiaCanada Wall 5–30 m Intermediate Strong Oct–Mar
C-130 Hercules An intact cockpit going feral; the cargo-bay swim-through; storm… AqabaJordan Artificial reef 12–17 m Beginner Mild Apr, May, Jun, Sep, Oct, Nov
C-53 Felipe Xicotencatl Upright intact hull, guided interior corridors, glassy sweepers, easy… CozumelMexico Wreck 15–25 m Intermediate Mild Dec–Apr
C-58 General Anaya Winter eagle-ray squadrons, broken-hull swim-bys, big morays, honest… Isla Mujeres & CancúnMexico Wreck 18–26 m Advanced Strong Dec–Mar
CJ's Drop Off Chimney swim-throughs opening onto the wall, sharp shelf-to-abyss… UtilaHonduras Wall 5–40 m Intermediate Mild Mar, Apr, May, Aug, Sep
Cabo Douglas Marine iguanas grazing underwater, flightless cormorants hunting, sea… Galápagos IslandsEcuador Shore 3–15 m Intermediate Mild
Cabo Pearce Manta stack-ups over the ridge, engaged dolphins, whale song in season Socorro & the RevillagigedosMexico Reef 10–40 m Advanced Moderate
Cabo Pulmo Reef The bigeye jack tornado, bull sharks over the sand, a protected reef… Sea of Cortez & Cabo PulmoMexico Reef 5–18 m Beginner Mild Jul–Nov
Caesar's Rocks A maze of arches and tunnels; soft-coral doorways in torchlight… Beqa Lagoon & Pacific HarbourFiji Pinnacle 5–22 m Beginner Mild
Cannibal Rock Sea apples and carpet invertebrate cover; dense macro; the signature… KomodoIndonesia Seamount 5–30 m Intermediate Moderate Nov–Apr
Cape Kri Extreme fish density at the point; sweetlips aggregations; sharks and… Raja AmpatIndonesia Reef 5–40 m Intermediate Strong Oct–Apr
Cara a Cara Sustained close encounters with Caribbean reef sharks, clear… RoatánHonduras Reef 18–21 m Advanced Mild Feb–Aug
Carall Bernat Barracuda wheels, red gorgonian forests below 15 m, big-fish energy Medes IslandsSpain Pinnacle 5–40 m Advanced Moderate Jun–Oct
Caribsea Sand tigers by the dozen, dense baitfish clouds, a moving chapter of… North Carolina Outer BanksUnited States Wreck 25–27 m Advanced Moderate Jun–Sep
Carpet Cove A completely coral-claimed small wreck; glassfish clouds in the… Beqa Lagoon & Pacific HarbourFiji Reef 8–26 m Beginner Mild
Cars Frogfish-stuffed car shells, sand aprons full of ambush hunters… Dumaguete, Dauin & Apo IslandPhilippines Muck 15–25 m Intermediate Mild Mar, Apr, May, Jun, Oct, Nov
Carwash Underwater lily garden, amber tannic light in summer, easy cavern… Riviera Maya & the CenotesMexico Cenote 3–15 m Beginner None Nov–Apr
Casa Cenote Mangrove-lined channel, shimmering halocline, juvenile tarpon, easy… Riviera Maya & the CenotesMexico Cenote 2–8 m Beginner Mild Nov–May
Casino Point Dive Park (Catalina) Stairway-entry kelp forest, fearless garibaldi, protected lobster… California Channel IslandsUnited States Kelp forest 5–28 m Beginner None
Castle Rock Sharks hunting fusilier schools; reef-hook front seats at the current… KomodoIndonesia Seamount 4–30 m Advanced Strong Apr–Nov
Catalina Islands Giant mantas in the cool months, eagle ray squadrons, easy logistics… Costa Rica Pacific CoastCosta Rica Pinnacle 8–25 m Intermediate Moderate Nov–May
Cathedral The arch-framed raggie silhouette; a natural amphitheater made for… Aliwal Shoal & UmkomaasSouth Africa Reef 14–27 m Intermediate Moderate Jun–Nov
Cathedral Cove (Anacapa Island) Sunlit kelp columns, tame reserve-zone marine life, sea lion and seal… California Channel IslandsUnited States Kelp forest 5–18 m Beginner Mild
Cave of the Sleeping Sharks A landmark of shark-behavior history, cavern ledges, possible resting… Isla Mujeres & CancúnMexico Reef 15–21 m Advanced Moderate Dec–Apr
Caverna da Sapata A daylight cavern in a sheer volcanic point, resting nurse sharks… Fernando de NoronhaBrazil Cave 10–22 m Intermediate Moderate Aug–Nov
Cedar Pride The swim-through beneath the hull; soft-coral growth on masts and… AqabaJordan Wreck 8–26 m Intermediate Mild Apr, May, Jun, Sep, Oct, Nov
Cenote Angelita The false lake of hydrogen sulfide, drowned trees in the mist… Riviera Maya & the CenotesMexico Cenote 5–40 m Advanced None Nov–May
Chac Mool & Kukulkan Kukulkan's light beams, textbook halocline, air-dome chamber, close… Riviera Maya & the CenotesMexico Cenote 4–14 m Beginner None Apr–Aug
Chaikou Healthy branching-coral thickets, hawksbill encounters, easy… Green IslandTaiwan Reef 3–20 m Beginner Mild Apr–Sep
Challenger Bay Trevally hunting in torch beams at night, garden eel flats, relaxed… Cairns & the Ribbon ReefsAustralia Reef 5–18 m Beginner Mild Jun–Nov
Champagne Reef Swimming through volcanic bubble streams, warm vents, seahorse… DominicaDominica Reef 3–15 m Beginner None
Chandelier Cave Surfacing among stalactites; torchlight in the final chamber… PalauPalau Cave 3–12 m Intermediate None
Chapel Point (Apo Island) Unbroken hard-coral fields, point-blank turtles, the gentle half of… Dumaguete, Dauin & Apo IslandPhilippines Reef 3–25 m Beginner Mild Mar–Jun
Chole Bay All-weather lagoon diving; seagrass-and-coral mosaic full of… Mafia IslandTanzania Reef 3–18 m Beginner Mild Jul–Feb
Chrisoula K Holds stacked with floor tiles; machinery in the aft workshops; an… Hurghada & El GounaEgypt Wreck 5–27 m Intermediate Mild Apr, May, Jun, Sep, Oct, Nov
Christ of the Abyss The famous statue, easy depths, snorkel-friendly coral heads Florida KeysUnited States Reef 3–9 m Beginner Mild
Christmas Point Archway sequences, ribbon eels and Napoleon wrasse, northern-Similan… Similan Islands & Richelieu RockThailand Reef 8–35 m Intermediate Moderate Dec–Apr
Chumphon Pinnacle Anemone-carpeted summit, torrents of trevally and barracuda, the… Koh TaoThailand Pinnacle 14–36 m Intermediate Moderate Mar–Sep
Cindy's Reef Shallow, sunlit coral gardens; anemonefish and sea kraits at close… Espiritu SantoVanuatu Reef 3–18 m Beginner Mild
Cirkewwa Arch & Reef The arch, cavern light, resident octopus and morays, hub for two… Malta & GozoMalta Reef 5–36 m Beginner Mild May–Oct
Clan MacWilliam An upright 1920s steamer in flat-calm water; deck machinery under… VavaʻuTonga Wreck 18–30 m Intermediate None
Clown Valley An anemone carpet of absurd extent; anemonefish in their hundreds; a… AlorIndonesia Reef 5–25 m Intermediate Moderate Apr–Nov
Cocoa Thila Dense snapper walls; patrolling sharks; a thila long enough to absorb… North & South Malé AtollsMaldives Pinnacle 10–30 m Advanced Strong Dec–Apr
Coconut Point (Apo Island) Trevally barrels in ripping current, turtles indifferent to the flow… Dumaguete, Dauin & Apo IslandPhilippines Drift 5–30 m Advanced Strong Mar–Jun
Cod Hole Face-to-face potato cod, regulated feeding ritual, Maori wrasse… Cairns & the Ribbon ReefsAustralia Reef 10–28 m Beginner Moderate Jun–Nov
Colombia Wall Skyscraper pinnacles, ravine swim-throughs, turtles and eagle rays… CozumelMexico Wall 12–40 m Intermediate Moderate Dec–Apr
Condor Bank Close, calm blue-shark encounters; occasional mako fly-bys; true… The AzoresPortugal Blue water 5–20 m Intermediate Mild Jul–Oct
Constellation & Montana Two eras of wrecks in one swim, hardened cement cargo, The Deep… BermudaBermuda Wreck 6–9 m Beginner Mild May–Oct
Coral Gardens Sprawling healthy coral fields under Gros Piton, easy atmospheric… Saint LuciaSaint Lucia Reef 5–25 m Beginner Mild
Cornucopia Tiered overhangs of soft coral; pygmy seahorses in the fan band; long… WakatobiIndonesia Wall 3–40 m Beginner Mild Mar–Nov
Corveta Afonso Cerqueira Intact modern warship, prepared swim-throughs, fast-growing fish… MadeiraPortugal Wreck 15–33 m Intermediate Mild Jun–Oct
Corveta Ipiranga (V17) An intact upright warship in exceptional visibility, one of South… Fernando de NoronhaBrazil Wreck 45–63 m Technical Moderate
Cousins Rock Endemic black coral gardens, Pacific seahorses, playful sea lions… Galápagos IslandsEcuador Reef 8–30 m Intermediate Moderate
Cristobal Colon Vast scattered liner wreckage, shallow bright conditions, machinery… BermudaBermuda Wreck 5–17 m Beginner Mild May–Oct
Crystal Bay Seasonal ocean sunfish at cleaning stations; cold, clear upwelling… Bali & Nusa PenidaIndonesia Reef 5–30 m Advanced Strong Jul–Oct
Crystal Rock Vividly clear water in season; soft-coral faces; tuna and sharks on… KomodoIndonesia Seamount 2–30 m Advanced Strong Apr–Nov
Cueva del Tiburon (Cano Island) Resting whitetips at close, calm range, easy profile in the reserve's… Costa Rica Pacific CoastCosta Rica Reef 8–20 m Beginner Mild
Dabaisha Turtle traffic on a clean slope, livelier current-fed corner… Green IslandTaiwan Reef 4–25 m Beginner Moderate Apr–Sep
Daedalus Reef Schooling scalloped hammerheads in early summer; Anemone City; the… Brothers, Daedalus & St John'sEgypt Wall 5–40 m Advanced Strong May–Oct
Dangleben's Pinnacles Torrents of creole wrasse, sponge-studded volcanic towers DominicaDominica Pinnacle 9–35 m Intermediate Moderate
Darwin's Arch (Darwin's Pillars) Whale sharks June-November, walls of hammerheads, Galapagos sharks at… Galápagos IslandsEcuador Reef 6–30 m Advanced Strong Jun–Nov
Davidsgja Uncrowded rift diving, resident brown trout, open-lake atmosphere Silfra & IcelandIceland Freshwater 3–21 m Intermediate None Jun–Sep
Deacon's Reef Jungle-to-reef scenery in one frame; healthy hard-coral shallows… Milne BayPapua New Guinea Reef 3–25 m Beginner Mild
Delsan Wreck Barracuda and jack tornadoes, shark traffic on the corner, big-animal… Tubbataha ReefsPhilippines Wall 5–40 m Advanced Strong Mar–Jun
Dharavandhoo Thila Scuba manta encounters on the bay's doorstep during the season Baa Atoll & Hanifaru BayMaldives Pinnacle 10–28 m Intermediate Moderate Jun–Nov
Dhigali Haa Gray reef sharks over a soft-coral dome; a protected site beyond the… Baa Atoll & Hanifaru BayMaldives Pinnacle 8–30 m Intermediate Moderate Dec–Apr
Dhonfanu Thila Season-long manta cleaning activity at kneeling-depth blocks Baa Atoll & Hanifaru BayMaldives Pinnacle 10–30 m Intermediate Moderate Jun–Nov
Dillon Rock Multiple octopus and wolf eel dens on one small rock, long shallow… British ColumbiaCanada Pinnacle 5–21 m Intermediate Moderate Oct–Mar
Dinah's Beach Muck diving at its birthplace; frogfish and ghost pipefish in… Milne BayPapua New Guinea Muck 2–25 m Beginner None
Dindini Wall Clear-water outer wall; turtles on the lip and rays in the blue Mafia IslandTanzania Wall 10–30 m Intermediate Moderate Oct–Feb
Dirty Rock Jack schools that block the sun, hammerhead crossings, marbled rays… Cocos IslandCosta Rica Pinnacle 12–35 m Advanced Strong
Djabeda Whole-ship silhouette in clear water; eagle rays and barracuda… MauritiusMauritius Wreck 22–34 m Advanced Moderate Mar, Apr, Oct, Nov, Dec
Dori Liberty-ship history, easy depth, fish-covered debris field The AzoresPortugal Wreck 12–22 m Beginner Mild May–Oct
Dos Amigos Grande The 20 m archway, hammerheads on the outside edge, marbled rays in… Cocos IslandCosta Rica Pinnacle 15–35 m Advanced Strong
Dos Ojos Twin sunlit pools, Barbie and Bat Cave guideline circuits, dense… Riviera Maya & the CenotesMexico Cenote 3–10 m Beginner None Apr–Aug
Doña Marilyn A large, coral-carpeted ferry hull, rich fish life, sobering history… MalapascuaPhilippines Wreck 18–33 m Advanced Moderate Mar–Jun
Drop Off A 600 m wall starting at the beach, constant turtle traffic, the… Sipadan & MabulMalaysia Wall 2–40 m Intermediate Mild Apr–Sep
Duppy Waters Ghost-quiet north-shore atmosphere, sponge-heavy wall, uncrowded… UtilaHonduras Wall 8–35 m Intermediate Mild Mar, Apr, May, Aug, Sep
E.T. Coral-lined tunnels and arches; anemone fields with clownfish; easy… Beqa Lagoon & Pacific HarbourFiji Pinnacle 6–24 m Beginner Mild
East London & the Southern Start First action of the season; city logistics on a wilderness event The Sardine Run (Wild Coast)South Africa Blue water 0–25 m Advanced Strong May–Jun
Eden Rock & Devil's Grotto Tarpon gliding through silverside clouds (late summer), sunbeam… Grand CaymanCayman Islands Shore 4–14 m Beginner None Jun–Sep
Edithburgh Jetty Blue-ringed octopus and anglerfish at night, leafy seadragons… South AustraliaAustralia Artificial reef 3–8 m Beginner None Mar–Aug
Eel Garden The garden-eel colony at full extension; relaxed second-dive pace… DahabEgypt Shore 5–20 m Beginner Mild Apr, May, Jun, Sep, Oct, Nov
El Acuario (The Aquarium) Overwhelming fish density, whitetips stacked in trenches, sharks in… MalpeloColombia Reef 10–35 m Advanced Moderate
El Aguila Three-piece broken hull, oversized green morays and groupers… RoatánHonduras Wreck 20–33 m Advanced Mild Mar–Aug
El Arrecife Silky aggregations in season, reforming hammerhead schools, action… MalpeloColombia Reef 12–40 m Advanced Strong
El Bajo Seamount Mobula flights over the ridges, pelagic traffic, the gulf's most… Sea of Cortez & Cabo PulmoMexico Seamount 18–40 m Advanced Moderate Aug–Nov
El Bajon Twin towers in blue water, large groupers, summer pelagic fly-bys Canary IslandsSpain Pinnacle 8–40 m Advanced Moderate Jun–Nov
El Cabron Dense fish schools, lava arches and caves, winter angelshark… Canary IslandsSpain Reef 5–30 m Intermediate Mild May–Nov
El Canon (The Canyon) Hammerhead schools over the cut, layered shark traffic, occasional… Socorro & the RevillagigedosMexico Reef 15–40 m Advanced Moderate
El Dofi Tunnel arches with blue-light exits, groupers and corvina in the… Medes IslandsSpain Cave 6–30 m Intermediate Mild May–Oct
El Dorado Winter great hammerhead encounters, quieter alternative arena to the… Tiger Beach & Grand BahamaThe Bahamas Reef Intermediate Mild Oct–Apr
El Farallon Coral towers and canyons, reef sharks on patrol, silky sharks… Jardines de la ReinaCuba Pinnacle 15–35 m Intermediate Mild Dec–Apr
El Frio (Ultrafreeze) Big groupers on an old freezer ship, cool offshore atmosphere… Isla Mujeres & CancúnMexico Wreck 25–30 m Advanced Moderate Dec–Apr
El Puertito Green turtle encounters when luck cooperates, calm shallow water… Canary IslandsSpain Shore 3–12 m Beginner None May–Nov
El Vencedor Wreck (Cabo Pulmo) Unbaited bull sharks at recreational depth, guided etiquette that… Sea of Cortez & Cabo PulmoMexico Wreck 10–15 m Intermediate Mild Nov–May
Electric Beach Fish blizzards in the warm outflow; frequent spinner dolphin flybys… OʻahuUnited States Shore 3–12 m Intermediate Moderate
Elephant Ear Canyon Giant elephant ear sponge, sand-river canyon through the wall Turks and CaicosTurks and Caicos Islands Wall 10–40 m Intermediate Mild
Elephant Head Rock The archipelago's best swim-through maze, light-shafted granite… Similan Islands & Richelieu RockThailand Reef 8–40 m Advanced Strong Dec–Apr
Elphinstone Reef Oceanic whitetips in fall; sheer soft-coral walls; the exposed north… Marsa Alam & the Deep SouthEgypt Wall 12–40 m Advanced Strong Mar, Apr, May, Oct, Nov, Dec
Els Tascons Grouper encounters at close range, varied easy topography, macro-rich… Medes IslandsSpain Reef 5–35 m Beginner Mild May–Oct
Ennerdale Wreck Moray-dense broken tanker; grouper and rays around 30-meter sand SeychellesSeychelles Wreck 18–30 m Advanced Mild Mar, Apr, May, Oct, Nov
Fairyland Swept-clean coral plateau, island-best visibility, twin drop-off edges Saint LuciaSaint Lucia Reef 10–25 m Intermediate Moderate
False Entrance Canyon swim-throughs, patrolling sharks on the rim, dramatic light in… Coral Sea & Osprey ReefAustralia Wall 6–40 m Intermediate Moderate Jun, Jul, Sep, Oct, Nov, Dec
Fang Ming Wreck Turtles asleep inside the holds, cup-coral bloom on the rails, gentle… Sea of Cortez & Cabo PulmoMexico Wreck 12–21 m Intermediate Mild Aug–Nov
Farnsworth Bank Purple hydrocoral gardens, open-water pelagic chances, Catalina's… California Channel IslandsUnited States Seamount 18–40 m Advanced Moderate
Fish Head Patrolling gray reef sharks; fearless Napoleon wrasse; fish density… Ari AtollMaldives Pinnacle 10–30 m Advanced Moderate Dec–Apr
Fish Tales Tiger and lemon sharks over living reef, packed fish holes… Tiger Beach & Grand BahamaThe Bahamas Reef 10–15 m Intermediate Mild Oct–Apr
Five Caves (Mākena) Sleeping whitetips in the caverns; turtles at cleaning ledges; a… Maui & MolokiniUnited States Reef 5–14 m Intermediate Mild
Five Mile Reef Pristine plate-coral fields; the connoisseur's quiet alternative Sodwana BaySouth Africa Reef 12–21 m Intermediate Mild Apr–Sep
Five Seas Goliath grouper encounters, tarpon in the channel shade, tide-driven… Jardines de la ReinaCuba Reef 10–25 m Intermediate Moderate Dec–Apr
Flamingo Bay Dense soft-coral color, seahorse hunting, gentle multi-level profile GrenadaGrenada Reef 6–25 m Beginner Mild
Flynn Reef Reliable day-trip coral gardens, giant clams, turtles, easy… Cairns & the Ribbon ReefsAustralia Reef 5–25 m Beginner Mild Jun–Nov
Forest Shallow black coral groves, turtle traffic off a nesting islet, steep… BonaireBonaire Wall 8–30 m Intermediate Mild
Formigas Islets & Dollabarat Reef Exceptional visibility, big groupers, pelagic surprises at a rarely… The AzoresPortugal Pinnacle 6–40 m Advanced Moderate Jul–Sep
Fujikawa Maru Zero fighter fuselages in the forward holds; the coral-encrusted… Chuuk (Truk) LagoonFederated States of Micronesia Wreck 9–34 m Intermediate Mild Dec–Apr
Fukui Point The giant-clam row; terraces of garden eels and gobies; relaxed… Bunaken & ManadoIndonesia Reef 5–30 m Beginner Mild Mar–Oct
Fury Shoals Sha'ab Claudio's sunlit caverns; cottage-sized hard-coral heads… Marsa Alam & the Deep SouthEgypt Reef 4–30 m Intermediate Mild Mar, Apr, May, Jun, Sep, Oct, Nov
Futo Squid egg beds in early summer, resident frogfish and octopus, calm… Izu PeninsulaJapan Reef 3–25 m Beginner Mild Sep–Dec
Garajau Marine Reserve Fearless dusky groupers, volcanic slopes, reliable shelter on the… MadeiraPortugal Reef 6–40 m Beginner Mild Jun–Oct
Garden Eel Cove (Manta Night Dive) Barrel-rolling reef mantas centimeters overhead; known individuals… Kona, HawaiʻiUnited States Reef 5–14 m Beginner Mild
Garden of Eden Soft-coral color on giant blocks; table-coral terraces; reliable… Daymaniyat IslandsOman Reef 6–25 m Beginner Mild Feb, Mar, Apr, Sep, Oct, Nov
Garuae Pass Shark-covered terraces on a huge tide; big pelagics in the entry… FakaravaFrench Polynesia Channel 15–40 m Advanced Strong May–Oct
Gato Island The under-island tunnel with waiting whitetips, resident sea kraits… MalapascuaPhilippines Reef 4–25 m Intermediate Mild Mar–Jun
Georg Thiele April 1940 battle history, wreckage on a dramatic fjord slope… Arctic NorwayNorway Wreck Advanced Mild May–Sep
German Channel Reef mantas at cleaning stations, best from about December to March… PalauPalau Channel 8–25 m Intermediate Moderate Dec–Mar
Giannis D The tilted engine room; the intact heeled stern; glassfish swirling… Hurghada & El GounaEgypt Wreck 6–27 m Intermediate Mild Apr, May, Jun, Sep, Oct, Nov
Giant's Castle Smalleye stingray territory; deep-passage mantas; humpback song in… Tofo BeachMozambique Reef 21–33 m Advanced Moderate May–Nov
Gili Tepekong The boulder Canyon; stacked whitetip sharks; cold-water mola… Bali & Nusa PenidaIndonesia Reef 8–30 m Advanced Strong Jul–Oct
Gladden Spit Whale sharks feeding on snapper spawn, massed spawning aggregations… Belize Barrier ReefBelize Blue water 10–30 m Advanced Moderate Mar–Jun
Goofnuw Channel Cleaning-station manta encounters at their mid-year best; long… YapFederated States of Micronesia Channel 5–18 m Intermediate Moderate May–Aug
Gordon Reef The Loullia standing on the reef; garden-eel plains; easy plateau… Sharm El Sheikh & Ras MohammedEgypt Reef 3–24 m Beginner Mild Apr, May, Jun, Sep, Oct, Nov
Gordon Rocks Hammerheads on a day trip, eagle rays stacked in current, sea lion… Galápagos IslandsEcuador Pinnacle 12–32 m Advanced Strong
Granito de Oro Whitetips by the dozen in the shallows, turtles at close range, a… CoibaPanama Reef 3–18 m Beginner Mild
Great Blue Hole Swimming through 40 m stalactites, reef sharks in the bowl, one of… Belize Barrier ReefBelize Blue hole 10–124 m Advanced None Mar–Jun
Great Northern Wreck Century-old cable-ship remains at friendly depth near Stone Town Zanzibar & MnembaTanzania Wreck 8–16 m Beginner Mild Jan, Feb, Jul, Aug, Sep, Oct, Dec
Great Wall (Bloody Bay) A sheer face beginning at 6 m, sponge-packed vertical terrain, wall… Little CaymanCayman Islands Wall 5–40 m Intermediate Mild Apr–Aug
Great White Wall The white soft-coral face at full feed; the tunnel entry; blue-water… Taveuni & Rainbow ReefFiji Wall 10–35 m Advanced Moderate May–Oct
Green Bay Easy conditions, statue cluster, octopus and turtle possibilities on… Larnaca & the ZenobiaCyprus Shore 2–12 m Beginner None May–Nov
Guraidhoo Kandu Hooked-in shark watching; a fast, clean drift into the lagoon North & South Malé AtollsMaldives Channel 10–30 m Advanced Strong Dec–Apr
HIJMS Nagato The four propellers; 41-cm gun muzzles beneath the inverted bow; the… Bikini AtollMarshall Islands Wreck 33–52 m Technical Mild May–Oct
HP Reef Soft-coral-lined chimneys and caves; sharks and rays riding channel… North & South Malé AtollsMaldives Pinnacle 8–30 m Advanced Strong Dec–Apr
HTMS Sattakut Mounted bow and stern guns, an intact upright hull at Advanced depth… Koh TaoThailand Wreck 18–30 m Intermediate Mild Mar–Sep
Habili Ali Giant gorgonians and black coral; sharks on the up-current face; a… Brothers, Daedalus & St John'sEgypt Pinnacle 8–40 m Advanced Strong Apr, May, Jun, Sep, Oct
Hairball Hairy frogfish; mimic and coconut octopus; benchmark black-sand… Lembeh StraitIndonesia Muck 3–18 m Beginner Mild
Half Moon Caye Wall Garden-eel flats, a sheer sponge-clad wall, eagle rays and turtles… Belize Barrier ReefBelize Wall 8–40 m Intermediate Mild Feb–Jun
Halliburton Compact upright wreck, textbook deep and wreck training profiles… UtilaHonduras Wreck 18–30 m Advanced Mild Mar, Apr, May, Aug, Sep
Hammerhead Point (Rasdhoo Madivaru) Dawn blue-water hangs for scalloped hammerheads; wall traffic on the… Ari AtollMaldives Blue water 15–30 m Advanced Moderate Dec–Apr
Hanging Gardens Overhanging soft-coral terraces, turtles bedded on the balconies, the… Sipadan & MabulMalaysia Wall 5–40 m Intermediate Mild Apr–Aug
Hanifaru Bay Mass manta feeding events — chain and cyclone feeding; occasional… Baa Atoll & Hanifaru BayMaldives Channel Beginner Mild Jun–Nov
Hannibal Bank Seasonal whale sharks, hammerheads below the thermocline, big-fish… CoibaPanama Seamount 18–40 m Advanced Strong Dec–Apr
Hatta Reef Steep walls with heavyweight fish life; bumphead squads; realistic… Banda Sea & AmbonIndonesia Wall 3–40 m Intermediate Moderate Mar, Apr, Sep, Oct, Nov
Hayut Run Conveyor-belt drifting over turtle gardens; napping zebra sharks; a… Daymaniyat IslandsOman Reef 5–20 m Beginner Mild Feb, Mar, Apr, Sep, Oct, Nov
Heian Maru The lettered bow; periscopes and torpedoes in the holds; the sheer… Chuuk (Truk) LagoonFederated States of Micronesia Wreck 12–34 m Intermediate Mild Dec–Apr
Hermes Fully intact upright freighter, whole-ship visibility, easy interior… BermudaBermuda Wreck 14–24 m Intermediate Mild May–Oct
Hilma Hooker Full-size freighter on its side, tarpon under the hull, double-reef… BonaireBonaire Wreck 18–30 m Advanced Mild
Hol Chan Cut Fearless big groupers and morays, nurse sharks and rays… Belize Barrier ReefBelize Channel 3–9 m Beginner Moderate Feb–May
Ilheu de Vila Franca Volcanic crater lagoon, easy reef walls, reliable summer conditions The AzoresPortugal Reef 3–25 m Beginner Mild Jun–Sep
Inglis Shoal Barracuda tornadoes over the summit; trevally walls; the chance of a… Kimbe BayPapua New Guinea Seamount 12–35 m Intermediate Moderate
Inland Sea Tunnel The 80 m tunnel, the blue exit frame, big walls beyond the cliff Malta & GozoMalta Cave 2–26 m Intermediate Mild May–Oct
Irako Coron's most intact major wreck, famed engine-room penetration for… CoronPhilippines Wreck 28–45 m Advanced Mild Nov–Apr
Irizaki Schooling scalloped hammerheads, pure blue-water drift diving… YonaguniJapan Blue water 15–40 m Advanced Strong Dec–Mar
Iro Maru The coral-clad bow gun; kingposts silhouetted overhead; big morays… PalauPalau Wreck 12–40 m Advanced Mild
Islas Frijoles Frogfish and seahorse hunting, nudibranch variety, gentle profiles… CoibaPanama Reef 8–25 m Intermediate Mild
Izu Oceanic Park Classic organized shore entry, anemonefish colonies, seasonal… Izu PeninsulaJapan Reef 5–40 m Beginner Mild Sep–Dec
Jackson Reef Summer hammerhead drops off the north point; gorgonian-covered walls… Sharm El Sheikh & Ras MohammedEgypt Reef 3–40 m Intermediate Strong May–Oct
Jahir Frogfish and ghost pipefish; outstanding night diving; reliably fresh… Lembeh StraitIndonesia Muck 3–20 m Beginner Mild
Jake Seaplane An intact WWII floatplane at leisure-dive depth; the exposed radial… PalauPalau Wreck 12–16 m Beginner None
James Bond Wrecks Bond film props turned reef, easy depths, frequent shark flybys Nassau & New ProvidenceThe Bahamas Wreck 9–15 m Beginner Mild
Japanese Gardens Terraced hard-coral cover at its best in Jordan; easy depths for… AqabaJordan Reef 3–30 m Beginner Mild Apr, May, Jun, Sep, Oct, Nov
Japanese Gardens First-dive calm, healthy shallow coral, turtle flybys through… Koh TaoThailand Reef 2–16 m Beginner None Feb–Sep
Jellyfish Lake The midday migration, when the swarm concentrates in sunlit water… PalauPalau Freshwater 0–5 m Beginner None
Jessie Beazley Reef Exceptional visibility, a complete reef in one dive, pelagic… Tubbataha ReefsPhilippines Reef 3–40 m Intermediate Moderate Mar–Jun
Jina Pass Quieter channel drift with better-preserved wall growth Mafia IslandTanzania Channel 10–30 m Intermediate Moderate Oct–Feb
Kal's Dream Dogtooth tuna at close range; shark traffic in ripping current; the… AlorIndonesia Pinnacle 8–40 m Advanced Extreme Apr, May, Jun, Sep, Oct, Nov
Kalanggaman Island Best visibility in the area, twin walls off a photogenic sandbar… MalapascuaPhilippines Wall 5–40 m Intermediate Moderate Feb–Jun
Kandooma Thila Shark and eagle-ray action at the up-current point; healthy ledges… North & South Malé AtollsMaldives Pinnacle 12–30 m Advanced Strong Dec–Apr
Karpata Steep sculpted drop-off, embedded historic anchors, standout… BonaireBonaire Reef 5–35 m Intermediate Mild
Kealakekua Bay Reserve-quality coral and clarity; history at the Cook monument… Kona, HawaiʻiUnited States Reef 3–30 m Beginner Mild
Kichwani Turtle-dense shallows; stepped coral slope from snorkel depth to 30… Zanzibar & MnembaTanzania Reef 6–30 m Beginner Mild Jan, Feb, Jul, Aug, Sep, Oct, Dec
Kicker Rock (Leon Dormido) Sharks transiting the channel, sheer walls, snorkeling with sea lions… Galápagos IslandsEcuador Channel 5–30 m Intermediate Moderate
Kilindoni Whale Shark Grounds Surface-feeding resident juvenile whale sharks, met on snorkel Mafia IslandTanzania Blue water 0–10 m Beginner Mild Oct–Feb
Kimon M The exposed engine and propeller; quieter conditions than the… Hurghada & El GounaEgypt Wreck 6–32 m Intermediate Mild Apr, May, Jun, Sep, Oct, Nov
Kimud Shoal Schooling scalloped hammerheads in season, backup thresher… MalapascuaPhilippines Seamount 12–40 m Advanced Moderate Dec–Apr
Kinasi Pass Incoming-tide drift through the marine park's main channel; grouper… Mafia IslandTanzania Channel 8–28 m Intermediate Strong Oct–Feb
Kirby's Rock Crinoid-covered wall, pygmy seahorse fans, dual macro-and-wide… AnilaoPhilippines Wall 5–27 m Intermediate Moderate Nov–Apr
Kogyo Maru Cargo holds with cement and machinery, readable wartime purpose… CoronPhilippines Wreck 22–36 m Intermediate Mild Nov–Apr
Koh Bon West Ridge Reef mantas at cleaning stations, a diveable ridge line in all… Similan Islands & Richelieu RockThailand Wall 10–40 m Intermediate Moderate Jan–Apr
Koh Tachai Pinnacle Trevally tornadoes in ripping flow, manta and whale-shark transits… Similan Islands & Richelieu RockThailand Pinnacle 12–36 m Advanced Extreme Dec–Apr
Kona Blackwater Drift The nightly vertical migration in open ocean; creatures from larval… Kona, HawaiʻiUnited States Blue water 10–18 m Advanced Mild

Site data is compiled from the sources on each site's own page and carries confidence labels; depths and conditions are planning ranges, not survey data.

Australia, New Zealand & East Asia

Cairns & the Ribbon ReefsNingaloo ReefCoral Sea & Osprey ReefOkinawa & the Kerama IslandsPoor Knights IslandsTownsville & the YongalaGreen IslandIzu Peninsula

Caribbean & Western Atlantic

BonaireCozumelRiviera Maya & the CenotesBelize Barrier ReefGrand CaymanIsla Mujeres & CancúnRoatánTiger Beach & Grand Bahama

Europe, Atlantic & Mediterranean

Malta & GozoSilfra & IcelandThe AzoresCanary IslandsLarnaca & the ZenobiaScapa FlowArctic NorwayMadeira

Indian Ocean & East Africa

North & South Malé AtollsAri AtollBaa Atoll & Hanifaru BayAliwal Shoal & UmkomaasMafia IslandMauritiusSeychellesSodwana Bay

Pacific Islands & Micronesia

PalauChuuk (Truk) LagoonFakaravaKona, HawaiʻiRangiroaTaveuni & Rainbow ReefBeqa Lagoon & Pacific HarbourEspiritu Santo

Red Sea & Middle East

Sharm El Sheikh & Ras MohammedBrothers, Daedalus & St John'sDahabHurghada & El GounaMarsa Alam & the Deep SouthAqabaDaymaniyat IslandsMusandam Peninsula

Southeast Asia & Coral Triangle

Bali & Nusa PenidaKomodoRaja AmpatSipadan & MabulAnilaoCoronKoh TaoLembeh Strait

The Americas & Eastern Pacific

Galápagos IslandsCocos IslandFlorida KeysSea of Cortez & Cabo PulmoSocorro & the RevillagigedosBritish ColumbiaCalifornia Channel IslandsCosta Rica Pacific Coast