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Underwater at Mesali Island Reef
Peak season now

Mesali Island Reef

Pemba Island · Tanzania

The fringing reef around uninhabited Mesali Island is among the most intact coral ecosystems in the western Indian Ocean, its shallows crowded with hard corals in colours that look digitally enhanced: iridescent greens, deep purples, and chalky yellows. The reef slopes gently from the beach to 20 m and the diversity is staggering — over 300 fish species recorded here including species rarely seen on more trafficked reefs. Octopus roam the rubble zones and pipefish drift vertically between sea grass blades at the reef edge. The whole site has a dreamy, unhurried quality because you may be the only divers here for the entire day. Mesali is the Pemba secret that Pemba itself does not yet know it has!

Conditions

Depth

3 to 22 m

Open water and up

Current

Usually gentle

Can pick up on the edge

Visibility

15 to 28 m

Clearest in the calm season

Water

23 to 30°C

3 mm full suit

Your chances of seeing each animal

See all species recorded here →

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Gear

  • Basic kit

    • Mask and fins
    • BCD and regulator
    • 5mm full wetsuit · cooler water
    • Dive computer