Mafia Islands

The Marine Park

This small archipelago off the southern Tanzanian coast sits at the heart of one of the Indian Ocean’s most important marine protected areas. The Mafia Island Marine Park — the first of its kind in Africa — protects some of the most pristine coral gardens in the entire Indian Ocean. Below the surface, spectacular reef walls drop into the deep blue, manta rays glide effortlessly in the current, sea turtles navigate ancient routes, and over 460 species of fish inhabit the living coral. The visibility here regularly exceeds 20 metres, and in the cooler months between June and September the water achieves a clarity that makes every dive feel like flying.

Whale Sharks and Marine Life

The whale shark season at Mafia runs from October through March, when these colossal, filter-feeding fish gather in the warm, plankton-rich waters of the channel. Guided snorkel excursions are conducted with great care — strict protocols ensure that interactions never stress the animals. Slipping into the water beside a whale shark, watching its immense spotted body move slowly past, is a moment of pure wonder that very few people in the world have experienced. Manta rays are a regular sight year-round, often encountered in cleaning stations on the outer reef where they hover motionless as small fish tend to their gills and skin.

Chole Island

Accessible by traditional dugout canoe from Mafia’s main island, Chole Island holds the atmospheric ruins of an ancient Arab trading settlement, slowly being reclaimed by the forest. Enormous fig tree roots engulf the old coral-stone walls. Fruit bats roost in the canopy overhead in their thousands, launching at dusk in a spectacular cloud that fills the sky. The ruins testify to Mafia’s significance as a trading hub on the medieval Swahili coast — a history stretching back over a thousand years and still felt in the character of the island today.

An Island Without Crowds

There are no large resorts on Mafia. No package tour operators, no beach clubs, no jet skis. Accommodation is small-scale, authentic, and deeply rooted in the Swahili fishing culture that has defined these islands for centuries. Most guests come specifically for the diving and snorkelling, and the handful of lodges that serve them are staffed almost entirely by people from the island itself. Staying on Mafia means participating — however briefly — in a way of life that the rest of the world’s coastlines have largely lost.