Floating off the northeastern coast of Zanzibar, Mnemba Atoll is widely regarded as the archipelago’s premier marine destination. Known for its impossibly clear turquoise waters, vibrant coral gardens, and thriving aquatic life, this protected zone offers a world-class underwater experience. However, visiting requires a clear understanding of the difference between the exclusive private island and the accessible marine reserve.
This comprehensive guide explores everything from dive sites and marine wildlife seasons to the logistics of planning a sustainable visit to the Mnemba Island Marine Conservation Area (MIMCA).
Mnemba Island itself is a privately owned sanctuary, home to the exclusive &Beyond Mnemba Island lodge. Access to the island’s sandy shores is strictly reserved for overnight guests paying a premium for barefoot luxury. Day-trippers and boats are prohibited from landing on the beach, ensuring total privacy for the resort’s residents. If you are not staying at the lodge, your experience will be limited to the surrounding waters.
Surrounding the island is the Mnemba Island Marine Conservation Area (MIMCA), a protected zone that is open to the public. Geologically speaking, Mnemba is not a true "atoll" (a ring-shaped reef surrounding a lagoon) but rather a small island surrounded by an extensive fringing reef. This reef system is the main attraction for thousands of visitors, offering some of the healthiest coral ecosystems in East Africa. While you cannot step onto the island, the real magic lies beneath the surface, where the "atoll" status is legendary among divers.
For non-divers, Mnemba is arguably the best snorkeling spot in Zanzibar. The most popular area is Wattabomi, where the reef slopes gently from 6 to 30 meters.
Scuba divers have access to deeper, more dramatic topography:
While reef fish are present year-round, larger marine encounters are seasonal:
The closest departure point is Matemwe Beach, which is directly opposite the atoll.
To support conservation efforts, all visitors entering the marine park must pay a MIMCA entrance fee (typically included in your tour price, but always verify).
Francesco Junior Great place for deep diving and skirting.
Paulina Lipets Pretty perfect place. You can swim, snorkel, or just marvel at the surroundings
Titamenji Chulu Wow! Amazing snorkeling experience as a first timer!clear waters,simply beautiful
alice luna The island itself is private with very expensive fees for entrance, but you can stop with the boat nearby and enjoy the coral reef and its beautiful underwater life. It’s also quite easy to spot dolphins 🐬 Unfortunately the area gets quickly crowded with boats of tourists, so I suggest to plan the trip wisely in quiet hours.
Samo Beautiful, Extraordinary and Splendid. This place is heaven, took Dolphins and Snorkeling tour in Mnemba Island, where we were taken on a boat in the early morning to swim with dolphins and it was an amazing experience to swim with Dolphins and Whale Shark, then went to snorkeling at the public snorkeling spot where we were able to snorkeling and collect Starfish and watch colorful small fish. The color of the ocean alone made us speechless and didn’t want gaze away for the view, the tour lasted 4 hours in total, make sure you take along your snorkeling equipment and diving flipper if you want to swim with the Dolphins although they provide the equipment at the shore. Make sure you have anti jellyfish cream or spray on or get a full body diving suit to avoid jellyfish stings in some spots.