Divers will encounter diverse and beautiful marine life while diving in Zanzibar. Mnemba Atoll is home to many different species of marine life such as butterfly fish, leaf fish, pipe fish, shrimp, lobsters, manta rays, dolphins, turtles, and sharks. Leven Bank, on the other hand, is known for big game fish like barracuda, tuna, and huge moray eels. Migrating Humpback and Sperm whales can be seen from September - October, while manta rays, as well as whale sharks, can be sighted from December - April. Show more