Sharks
Nurse Shark
Ginglymostoma cirratum · Cartilaginous fish — family Ginglymostomatidae
The nurse shark is the Caribbean's resident couch dweller: a heavy-bodied, small-eyed animal the color of wet sand, folded under a ledge with its barbels drooping and its tail poking into the current. It can pump water over its gills while motionless, so entire dives pass while it does precisely nothing — then a night dive reveals the other nurse shark, nosing urgently through coral and inhaling octopus with an audible thump. At Belize's Shark Ray Alley and Bahamian feed sites they swarm like eager dogs. Its mellow reputation is deserved, right up until someone grabs one.
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 |
|---|---|---|---|
| CozumelMexico | Resident — seen on most dives | 年間を通じて | |
| Belize Barrier ReefBelize | Resident — seen on most dives | 年間を通じて | |
| Florida KeysUnited States | Resident — seen on most dives | 年間を通じて | |
| Grand CaymanCayman Islands | Resident — seen on most dives | 年間を通じて | |
| Nassau & New ProvidenceThe Bahamas | Resident — seen on most dives | 年間を通じて |
ベストな月、一目でわかる
理解を深める
ハビタット: Reefs, ledges, mangrove channels, and seagrass flats; rests by day under overhangs, often in piles
分布域: Tropical western Atlantic from Florida and the Bahamas to Brazil, plus the eastern Pacific coast of the Americas; the similar tawny nurse shark replaces it in the Indo-Pacific
生態・行動: A sedentary, nocturnal bottom-dweller with barbels like a catfish and a tail that trails behind it lazily. Days are spent wedged beneath ledges, frequently stacked on other nurse sharks; nights are spent slurping prey out of holes. Habituated animals at feed sites become boldly food-focused.
食性: Crustaceans, mollusks, and small fish vacuumed off the bottom with a powerful suction feed you can sometimes hear
サイズ: 目安は 2.3 m; 確認済みの最大記録 3.1 m (total length).
出会ったときの正しいふるまい方
No tail-pulling, no riding, no lifting resting animals for photos — behavior once common and now rightly banned. Give resting sharks their ledge and keep bait well managed at feed sites.
保全
Moved to Vulnerable in 2020 as inshore fishing and habitat loss eroded populations outside protected areas; still locally abundant in Florida, the Bahamas, and Belize.
目撃情報で知られるダイブサイト
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公式チャンネルより
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Sink or Swim? with Monét X Change | Monterey Bay Aquarium
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