Rays
Blue-Spotted Ribbontail Ray
Taeniura lymma · Cartilaginous fish — family Dasyatidae
Few reef animals photograph as improbably as this ray: an oval of ochre-gold scattered with neon-blue spots that look airbrushed on, a blue-striped ribbon of tail trailing behind. Red Sea divers meet it constantly — a flash of color retreating deeper under a table coral, or gliding across the sand at Ras Mohammed like a small flying carpet. The vivid spots advertise the venomous spines honestly, aposematic warning rather than decoration. It is a fixture of shallow Indo-Pacific reefs from Dahab to Sipadan, and its twitchy shyness is the correct response to a world of octopuses, hammerheads, and grabby photographers.
Where and when to see one
"Resident" means most dives at that destination encounter them; "seasonal" means reliably present in the listed months; anything else is a bonus, not a plan.
| Destination | Reliability | Months | Notes |
|---|---|---|---|
| Sharm El Sheikh & Ras MohammedEgypt | Resident — seen on most dives | Year-round | |
| Sipadan & MabulMalaysia | Resident — seen on most dives | Year-round | |
| DahabEgypt | Resident — seen on most dives | Year-round | |
| Similan Islands & Richelieu RockThailand | Resident — seen on most dives | Oct–May |
Best month, at a glance
Understanding them
Habitat: Coral reefs — tucked under table corals and ledges by day, hunting sand aprons on the rising tide
Range: Tropical Indo-Pacific from the Red Sea and East Africa through Southeast Asia to northern Australia and the western Pacific
Behavior: A shy, jewel-bright little ray that spends daylight wedged into reef crevices with just the tail showing, emerging over sand in the shallows to feed. Unlike many stingrays it seldom buries itself fully — the electric spots seem to do the warning instead.
Diet: Small crustaceans, worms, and mollusks rooted out of sand
Size: typically around 0.3 m; documented up to 0.35 m (disc width; total length with tail roughly doubles it).
How to behave around one
No prodding animals out of crevices for photos, no blocking the open side of a ledge, and watch fin tips over sand where they feed.
Conservation
Heavily collected historically for the aquarium trade, in which it fares poorly, and pressured by inshore fishing and reef loss across Southeast Asia.
Charted sites known for them
Watch
From the official channels
Best Places to Dive with Whale Sharks
Outrageously Tiny Fish
Sink or Swim? with Monét X Change | Monterey Bay Aquarium
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