Sharks
Tiger Shark
Galeocerdo cuvier · Cartilaginous fish — family Galeocerdidae
A big tiger shark owns whatever piece of ocean it is in. The head is broad and blunt, the eye large and unhurried, and the animal's approach is a straight, slow line that tests your composure long before it tests anything else. On the shallow sand of the Bahamas or Fiji's arena dives, tigers glide through groups of divers with a serenity that has rewritten the species' reputation — attentive management, not luck, keeps it that way. They are turtle specialists, garbage-can opportunists, and long-distance wanderers whose tracked migrations span ocean basins.
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 |
|---|---|---|---|
| Tiger Beach & Grand BahamaThe Bahamas | Resident — seen on most dives | 年間を通じて | |
| Cocos IslandCosta Rica | Resident — seen on most dives | 年間を通じて | |
| Beqa Lagoon & Pacific HarbourFiji | Resident — seen on most dives | 年間を通じて | |
| Aliwal Shoal & UmkomaasSouth Africa | Seasonal — reliable in season | Feb–Jun | |
| Coral Sea & Osprey ReefAustralia | Occasional | 年間を通じて | |
| OʻahuUnited States | Occasional | 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: Reef edges, lagoons, seagrass banks, and open water; comfortable from knee-deep flats to the deep blue
分布域: Circumglobal in tropical and warm temperate seas, from the Caribbean and Hawaii to the Coral Sea, Indian Ocean, and South Pacific
生態・行動: Slow, curious, and supremely confident. Tigers approach divers more directly than most large sharks, often making repeated close passes with a deliberate, almost sleepy cadence that should not be mistaken for indifference. The dark bars that name the species fade with age but remain visible in good light.
食性: The broadest menu of any reef shark — turtles, rays, fish, seabirds, carrion, and famously indigestible debris; adults are key predators of sea turtles
サイズ: 目安は 3.5 m; 確認済みの最大記録 5.5 m (total length; mature females commonly reach 4 m and exceptional animals past 5 m).
出会ったときの正しいふるまい方
Dive with operators who brief tiger protocol: dark gloves optional but no dangling gear, stay grouped and low, keep 360-degree awareness, never block an approach path, and exit the water calmly and together.
保全
Near Threatened globally with regional depletion from target fisheries, shark-control programs, and the fin trade. Bahamian and Fijian shark tourism demonstrates the species' economic value alive.
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
Best Places to Dive with Whale Sharks
Outrageously Tiny Fish
Sink or Swim? with Monét X Change | Monterey Bay Aquarium
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