Where to Snorkel in Zanzibar
Zanzibar sits inside a belt of warm, shallow Indian Ocean water with water temperatures staying between 25°C and 30°C year-round. The island and its surrounding islets are ringed by coral reefs that support a dense and varied population of marine life. Unlike many dive destinations, much of this marine environment is accessible to snorkellers without any certification.
The three most visited snorkelling areas each offer a different character and marine experience.
The Main Spots
Mnemba Atoll, a private island off the northeastern coast near Matemwe and Nungwi, is widely considered the finest snorkelling and diving location in Zanzibar. The atoll is a marine conservation area and entry is controlled. Day-trip boats circle the outer reef where snorkellers encounter hawksbill and green sea turtles, white-tip reef sharks, moray eels, octopus, and dense schools of tropical fish including parrotfish, angelfish, and moorish idols. Visibility often exceeds 20 metres on calm days. Access requires a permit fee included in most tour prices.
Blue Lagoon, situated between Nungwi and Kendwa in the north, offers sheltered, shallow snorkelling suitable for beginners. The lagoon's protected position means calmer water than the open coast, and the reef here supports colourful coral formations and smaller fish species. It is a popular stop on northside boat tours and often combined with a beach break.
Safari Blue reefs in Menai Bay, in the south near Fumba, are typically included as part of the full-day Safari Blue excursion. These patch reefs are shallower than Mnemba and the visibility varies with tidal conditions, but they regularly produce sightings of turtles, reef fish, and occasionally rays.
Good to Know
Reef-safe sunscreen is important across all sites — conventional sunscreen chemicals are harmful to coral. Most tour boats supply basic mask, fin, and snorkel sets, but a well-fitting mask makes a significant difference to the experience and it is worth bringing your own if you snorkel regularly. Currents around Mnemba can be strong; guides will brief you on entry and exit points. Touching or standing on coral causes lasting damage and should be avoided entirely.
