Shark Bank

Shark Bank is Mahé's big-fish dive: a granite rise far enough offshore that everything on it comes in extra size. Marbled rays the width of car hoods rest between the boulders, yellow snapper and big-eye trevally form permanent walls over the plateau, and barracuda hang up-current in the ranks. The name overpromises on sharks these days — whitetips and the odd passing whale shark in season, not reliable schools — but the site's mass of fish, granite architecture, and open-water character keep it at the top of the island's list. Current and the deep, referenceless descent make it an advanced trip.

その瞬間のために: Huge marbled rays; permanent snapper and trevally walls over granite

地形: Granite plateau and boulder field rising from deep sand well offshore of Mahé

流れ（カレント）: An offshore plateau with current on most tides; the crossing from Beau Vallon takes half an hour or more.

危険生物・リスク: Current, open-ocean surface conditions, and a bottom that starts below 14 meters.

保全: Wild encounters only; operators run no feeding of any kind.

ナイトロックス: ここでは効果的です——このエリアのプロファイルは、ナイトロックスが無減圧潜水時間を有意に延ばせる水深帯にあります（適切なトレーニングを受けていることが前提です）。