Leven Bank

Leven Bank is northern Zanzibar's grown-up dive: a rocky rise in the Pemba Channel where the top sits deeper than most Mnemba dives ever go and the current arrives with ocean-scale intent. The payoff is pelagic. Dogtooth tuna patrol the terraces, giant trevally hit bait schools in bursts, barracuda hold formation over the rock, and big morays and stingrays occupy the ledges below. Blue water surrounds everything, and encounters — kingfish, rays, the occasional shark — come from any direction. Operators require experience, deep-water drills, and SMB competence; in return the bank delivers the wildest fish action on the island.

その瞬間のために: Dogtooth tuna and trevally in current; a proper open-ocean bank dive

地形: Submerged rocky bank in the Pemba Channel north of Nungwi, terraced rock and rubble

流れ（カレント）: An open-channel bank swept by real current; dives are planned to the tide and drift the whole way.

危険生物・リスク: Strong current, blue-water descents and ascents, depth, and a long exposed crossing from Nungwi.

保全: The bank sits outside the conservation area and sees fishing pressure; report tangled gear rather than pulling it.

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）。