Diving in Tanzania: 11 Sites from Manta Rays to Deep Walls

Tanzania offers 11 mapped dive sites spread across three distinct island groups—Zanzibar, Pemba, and Mafia—each with its own character. You can dive here year-round, and the range of depths means beginners and technical divers both find worthwhile water. Manta rays and nudibranchs are among the recorded highlights.

Best dive sites in Tanzania

• Pemba — Mtangani Wall (advanced, 18–50 m): A deep wall dive on Pemba's less-visited coast. The depth demands experience and solid buoyancy control.
• Pemba — Misali Island Wall (intermediate, 10–40 m): More accessible than Mtangani but still a serious wall, dropping to 40 m alongside a protected marine area.
• Pemba — Manta Point (intermediate, 8–25 m): The name is the draw. Manta rays are recorded here, and the shallower ceiling makes it workable for intermediate divers.
• Zanzibar — Leven Bank (advanced, 18–40 m): An offshore seamount north of Zanzibar. Currents can run hard, rewarding divers who time it right.
• Zanzibar — Mnemba Atoll (beginner, 5–25 m): Tanzania's most dived site for good reason—calm, clear water, a wide depth range, and consistent marine life including nudibranchs.
• Mafia — Kinasi Pass (intermediate, 12–30 m): A channel dive in Mafia Island Marine Park where currents funnel fish and larger pelagics through.
• Mafia — Chole Bay (beginner, 5–18 m): Sheltered and shallow, Chole Bay works well as a first dive in Tanzania or a relaxed second dive of the day.
• Big Wall, Little Wall, Captain Muddy, THGI Nungwi (beginner): Four beginner-friendly sites rounding out the atlas, suitable for open-water training and first ocean dives.

When is the best time to dive in Tanzania

Tanzania is diveable year-round. Conditions vary by island and season—Zanzibar's southeast monsoon (roughly June–September) can affect sites on the exposed coast, while Pemba and Mafia often stay diveable when Zanzibar is choppy. No single month is universally off-limits.

Is Tanzania good for beginners

Yes. Mnemba Atoll, Chole Bay, Little Wall, Captain Muddy, and THGI Nungwi all start at 5 m and offer calm enough conditions for new divers. Pemba's walls and Leven Bank are better saved until you have 20–30 logged dives and are comfortable in current.

What you'll see

Manta rays are recorded at Pemba's Manta Point and appear elsewhere in the archipelago. Nudibranchs show up across sites—Mnemba Atoll is a reliable spot. Mafia Island Marine Park adds the context of a protected ecosystem, and Kinasi Pass concentrates fish life through its channel geography.

FAQ

Do I need a liveaboard to dive Pemba? No, but day trips from Pemba town are the norm. Some operators run liveaboards that cover Pemba, Zanzibar, and Mafia in a single trip.

Are there sharks in Tanzania? Larger pelagics are possible at sites like Leven Bank and Kinasi Pass, though specific shark species aren't listed in the current site data.

Can I dive Mnemba Atoll independently? The atoll sits inside a marine reserve. Most divers go through licensed operators based in Zanzibar's northeast coast.

Is Mafia Island worth the extra travel? Mafia sees far fewer divers than Zanzibar. If uncrowded reefs and a working marine park matter to you, the additional logistics are worth it.

Tanzania dive map