Sharks
Whitetip Reef Shark
Triaenodon obesus · Cartilaginous fish, family Carcharhinidae
The whitetip reef shark is the reef's off-duty predator: slim, gray-brown, white-flagged on dorsal and tail tips, draped over a sand patch beneath a ledge in groups of three or six, gills sighing. Divers step over them, almost literally, on a thousand Indo-Pacific reefs. Come back after dark and the same animals hunt like ferrets, jamming into coral heads until fish panic into open water. At Cocos's Manuelita the night shift numbers in the hundreds and ranks among diving's great spectacles. Long-lived, small-littered, and reef-bound, whitetips have quietly declined across much of Southeast Asia even as protected populations thrive.
Di mana dan kapan melihatnya
"Resident" berarti sebagian besar penyelaman di destinasi tersebut akan menjumpai mereka; "seasonal" berarti kehadirannya dapat diandalkan pada bulan-bulan yang tercantum; selain itu adalah bonus, bukan rencana.
| Destinasi | Keandalan | Bulan | Catatan |
|---|---|---|---|
| Galápagos IslandsEcuador | Resident: seen on most dives | Sepanjang tahun | |
| Sipadan & MabulMalaysia | Resident: seen on most dives | Sepanjang tahun | |
| PalauPalau | Resident: seen on most dives | Sepanjang tahun | |
| Cocos IslandCosta Rica | Resident: seen on most dives | Sepanjang tahun | |
| Tubbataha ReefsPhilippines | Resident: seen on most dives | Mar–Jun | |
| Sea of Cortez & Cabo PulmoMexico | Resident: seen on most dives | Sepanjang tahun |
Bulan terbaik, sekilas pandang
Memahaminya
Habitat: Coral reefs with caves, ledges, and swim-throughs; rests by day on sand patches and inside overhangs
Sebaran: Indo-Pacific and Eastern Pacific: Red Sea to Hawaii and French Polynesia, plus Cocos, Malpelo, the Galápagos, and Central American coasts
Perilaku: One of the few sharks that can pump water over its gills at rest, so days are spent stacked in caves or piled on sand, dozing in loose heaps. At night the species transforms into a relentless pack hunter, writhing into crevices after sleeping fish, the basis of Cocos Island's famous night dive.
Diet: Reef fish, octopus, crabs, and lobster extracted from holes at night with a slender, flexible body built for the job
Ukuran: biasanya sekitar 1.2 m; terdokumentasi hingga 1.7 m (total length).
Cara berperilaku di sekitarnya
Never block a cave mouth where sharks are resting, don't touch or prod dozing animals, and on night hunts hold your light steady off to the side rather than pinning fish for the pack.
Konservasi
Assessed Vulnerable in 2020; heavy inshore fishing across the Coral Triangle drives the decline, while reserves such as Cocos and Tubbataha show how quickly protected populations stabilize.
Situs-situs terdata yang dikenal dengan hal itu
Lokasi yang disorot dipetakan untuk spesies ini oleh editor kami; angka-angkanya adalah catatan kemunculan GBIF yang dicatat dalam radius sekitar 5 km dari suatu lokasi sejak 1990.
Tonton
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