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.
どこで・いつ見られるか
「常駐（Resident）」とは、そのダイビングスポットでのほとんどのダイブで遭遇できることを意味します。「季節限定（Seasonal）」とは、記載された月に確実に見られることを意味します。それ以外の出会いはボーナスであり、計画の前提にはなりません。
| 目的地 | 信頼性 | 月 | メモ |
|---|---|---|---|
| Sharm El Sheikh & Ras MohammedEgypt | Resident — seen on most dives | 年間を通じて | |
| Sipadan & MabulMalaysia | Resident — seen on most dives | 年間を通じて | |
| DahabEgypt | Resident — seen on most dives | 年間を通じて | |
| Similan Islands & Richelieu RockThailand | Resident — seen on most dives | Oct–May |
ベストな月、一目でわかる
理解を深める
ハビタット: Coral reefs — tucked under table corals and ledges by day, hunting sand aprons on the rising tide
分布域: Tropical Indo-Pacific from the Red Sea and East Africa through Southeast Asia to northern Australia and the western Pacific
生態・行動: 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.
食性: Small crustaceans, worms, and mollusks rooted out of sand
サイズ: 目安は 0.3 m; 確認済みの最大記録 0.35 m (disc width; total length with tail roughly doubles it).
出会ったときの正しいふるまい方
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.
保全
Heavily collected historically for the aquarium trade, in which it fares poorly, and pressured by inshore fishing and reef loss across Southeast Asia.
目撃情報で知られるダイブサイト
動画を見る
公式チャンネルより
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