This is one of our most recommended activities in Zanzibar, where you can swim and snorkel at three different spots (Dolphins, relaxing at the Sandbanks, and Snorkeling at the Mnemba reef. Mnemba Island was ranked No.1 Best Beach Destination in Africa by trip savvy. For the sake of precision, Mnemba is a reef and not an Atoll, as sometimes called Mnemba Atoll in many publications and charts. Mnemba is well known for the excellent clarity of its waters (for this area of the Indian Ocean) and the unusually prolific and diverse corals and tropical marine life where you can able to spot different species of fish while Snorkeling. Some of the species that you can see at Mnemba reef include; Angel Fish, Blue Spotted Rays, Black Snappers, Groupers, Red Tooth Triggers, Flounder, Octopuses, Leaf Fish, Scorpion Fish, Stone Fish, Frog Fish, and lots of Trevallies. Mnemba Island is one of the best spots in Africa for underwater adventures. Mnemba Atoll – Located North East Coast of the Zanzibar Island. Tourists flock here to combine relaxation with scuba diving or snorkeling at the incredibly colorful and diverse reefs that surround the island. This atoll features an easy dive down to about 20 meters and quite a bit of coral, you can also spot dolphins and sea turtles due to the deeper water in the area..