Stretching across more than 820 square kilometres of ocean, coral reefs, mangrove forests, seagrass meadows and islands, the Mafia Island Marine Park (MIMP) is Tanzania's first marine protected area and one of the country's greatest conservation success stories.
Established in 1995, the park protects an extraordinary diversity of marine life while supporting the livelihoods of local communities that have depended on these waters for generations. Today, visitors from around the world come to experience its vibrant coral reefs, swim alongside whale sharks, observe nesting sea turtles and explore one of the healthiest marine ecosystems in the Indian Ocean.
For many visitors, the Marine Park isn't simply somewhere to visit—it's the reason they chose Mafia Island.
For centuries, the waters surrounding Mafia Island have supported fishing communities whose traditions have been closely tied to the rhythms of the sea. As fishing pressure increased throughout the twentieth century, concerns grew over declining fish populations, coral damage and the long-term health of the island's marine ecosystems.
Recognising the ecological importance of the area, the Government of Tanzania established the Mafia Island Marine Park in 1995, making it the country's first marine national park.
Unlike many protected areas around the world, the Marine Park was designed not only to conserve biodiversity but also to work alongside local communities. Rather than excluding people from the ocean, it promotes sustainable fishing, conservation education and responsible tourism that supports local livelihoods.
Today, the park is recognised internationally for balancing conservation with community participation—a model that continues to evolve and improve.
The Marine Park was established to protect one of the richest concentrations of marine biodiversity in East Africa.
Its goals include:
Healthy oceans benefit everyone—from the fish that sustain local families to the visitors who come to experience Mafia Island's incredible underwater world.
Mafia Island lies where nutrient-rich ocean currents create ideal conditions for an astonishing variety of marine life.
Within the park you'll find:
Because tourism remains relatively low compared with many tropical destinations, much of the marine environment has remained remarkably healthy and unspoiled.
For travellers seeking authentic marine experiences rather than crowded beaches, Mafia Island offers something increasingly rare.
The Marine Park supports hundreds of species of fish, invertebrates, corals, marine mammals and reptiles.
Visitors regularly encounter:
Every snorkelling or diving trip offers something different, making every visit unique.
The coral reefs surrounding Mafia Island are among the most diverse in the Western Indian Ocean.
These living reefs provide food and shelter for hundreds of marine species while protecting the coastline from storms and erosion.
Snorkellers can explore shallow coral gardens filled with butterflyfish, angelfish, parrotfish and clownfish, while divers can discover dramatic reef walls, coral bommies and deeper offshore ecosystems.
Healthy coral reefs are the foundation of the entire Marine Park ecosystem, supporting both wildlife and local fisheries.
Between October and March, the waters around Mafia Island become one of the world's most reliable places to observe whale sharks.
Despite reaching lengths of more than 12 metres, these gentle giants feed almost exclusively on tiny plankton and pose no threat to humans.
Strict interaction guidelines help protect the animals while allowing visitors to enjoy unforgettable encounters in a responsible manner. These seasonal gatherings have made Mafia Island internationally renowned as one of the world's premier whale shark destinations.
Several species of sea turtles use the islands and beaches within the Marine Park throughout the year.
Green turtles and hawksbill turtles regularly nest on nearby islands, where conservation teams work with local communities to protect nesting sites and improve hatchling survival.
During nesting season, visitors may have the opportunity to witness one of nature's most remarkable events as tiny hatchlings make their first journey to the sea.
These conservation efforts play an important role in protecting species that face increasing threats throughout the world's oceans.
One of the Marine Park's greatest strengths is the involvement of local people.
Many residents work as park rangers, guides, conservation officers, researchers, boat captains and tourism professionals, helping protect the marine environment while supporting their families.
Community education programmes, sustainable fishing initiatives and conservation partnerships all contribute to preserving the island's natural heritage for future generations.
By visiting Mafia Island responsibly, travellers directly support an economy that values healthy oceans and thriving communities.
Visitors entering the Marine Park pay a conservation fee that helps support the ongoing management and protection of this remarkable ecosystem.
These fees contribute towards:
Every visitor plays a small but meaningful role in helping preserve Mafia Island's extraordinary marine environment.
(Current Marine Park fees can be found on our Visitor Information page or by contacting our team before your visit.)
Every visitor has an opportunity to make a positive impact.
Simple actions include:
Small actions, repeated by thousands of visitors, make a significant difference.
Mafia Island remains one of the Indian Ocean's most unspoiled destinations because conservation and tourism work hand in hand.
Responsible tourism helps ensure that future generations can continue to enjoy thriving coral reefs, abundant marine life and authentic island culture.
By choosing responsible operators, respecting wildlife and supporting local communities, every visitor becomes part of the ongoing story of conservation on Mafia Island.
Do I have to pay the Marine Park fee?
Most activities that take place within the Marine Park require visitors to pay the official conservation fee. Your tour operator can advise whether your chosen activity enters the protected area.
Why do I have to pay the fee?
The fee helps fund conservation, marine research, park management, education programmes and community initiatives that protect the park's unique ecosystems.
Can I visit the Marine Park without a guide?
Some areas can be accessed independently, but most visitors choose to explore the park with licensed guides who provide local knowledge and ensure activities are conducted responsibly.
What is the best time to visit?
The Marine Park offers excellent snorkelling and diving throughout the year. Whale sharks are typically seen from October to March, while humpback whales migrate through the area between July and October.