Manuelita

Manuelita is the islet guarding Chatham Bay and the closest thing Cocos has to a house reef - which at Cocos means hammerheads over the deep side by day and one of diving's great spectacles after dark. On the night dive, hundreds of whitetip reef sharks pour over the coral garden in a hunting wave, shouldering into crevices after sleeping fish while divers' lights track the melee. Tiger sharks, now regular at Cocos, cruise Manuelita's sand edge often enough that guides brief for them as a matter of course. The shallow garden also serves as the trip's gentlest dive, thick with morays and marbled rays.

その瞬間のために: The whitetip night hunt, regular tiger shark passes, an easy coral garden in a hard place

地形: Coral garden on the protected side, boulders and wall on the exposed side

流れ（カレント）: The sheltered inside works in most conditions; the deep outside corner catches flow and sharks.

危険生物・リスク: Night-dive task loading amid large excited animals; tiger shark protocol per the guides.

保全: Night dives run under park protocols; lights and diver numbers are managed to limit disturbance.

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）。