Mafia Island
Tanzania's most remote island in the Zanzibar Archipelago — known for whale sharks from October to March, world-class diving inside a Marine Park, and a level of quiet that makes Pemba seem busy. For the visitor who specifically wants wild, undeveloped, and genuinely off the map.
Tim Hennig — Zanzibar Archipelago
| Mafia Island — at a glance | |
|---|---|
| Location | Southern Zanzibar Archipelago · ~130 km SW of Zanzibar City |
| Getting there | ~30 min flight from Dar es Salaam · ~20 min from Zanzibar · no reliable ferry 1 source |
| Whale sharks | Season: October–March · peak November–February · snorkel trip USD 60 2 sources |
| Protection | Whale sharks legally protected in Tanzania · Mafia = IUCN Important Marine Area 1 source |
| Marine Park | Mafia Island Marine Park (MPRU, Act 29/1994) · coral reef + turtle nesting + mangroves |
| Turtles | 5 sea turtle species in Tanzanian waters; all protected; nesting beaches on Mafia |
| Thanda Island | Jumeirah Thanda Island: ultra-luxury, sole-use from USD 40,750/night, on Shungimbili Island 1 source |
| Tourism level | Very low — eco-lodges only, no resort development, no mass tourism |
| Best for | Whale sharks · remote diving · turtle conservation · genuine off-grid experience |
Last verified: June 2026
Whale sharks — the season and how it works
October to March: one of East Africa's most reliable encounters
- Whale shark season at Mafia Island runs from approximately <strong>October to March</strong>, with peak sightings in November–February when the animals feed on the plankton bloom triggered by the start of the short rain season
- Whale sharks (Rhincodon typus) are the world's largest fish — typically 6–10 metres on Mafia, with occasional larger individuals; they are filter feeders and entirely harmless to swimmers
- The snorkel trip with whale sharks costs approximately <strong>USD 60</strong> from local operators in Kilindoni (Mafia's main town); some operators charge up to USD 120 — shop around for the same product
- Tanzania declared whale sharks legally protected; ethical guidelines at Mafia require: no touching, no flash photography, minimum distance (1 metre body, 3 metres tail), engines off when within 300 metres
- Mafia Island holds an IUCN Important Marine Area designation specifically for whale shark conservation — the population feeding here is part of a broader Indian Ocean circuit tracked by researchers
Five species of sea turtle — year-round
- Five sea turtle species occur in Tanzanian coastal waters: green turtle, hawksbill, loggerhead, olive ridley, and leatherback — all are protected; Mafia Island has nesting beaches for several species
- Mafia Island Marine Park includes the Ras Kisimani and Ras Mkumbi beaches — nesting sites monitored by park rangers
- Snorkelling inside the marine park at the right sites offers turtle sightings year-round; green turtles are the most commonly encountered during dives and snorkel trips
- The Coral Reef Restoration Programme operated from Thanda Island (in partnership with The Ropes of Hope, a local NGO) works on reef restoration near Mafia — context for the coral health status of the area
- Sea turtle encounters are not sold as "experiences" in the same way as whale sharks — they are part of the general marine park ecology rather than a scheduled tour
Diving in Mafia Island Marine Park
Mafia Island Marine Park (administered by MPRU under Act 29/1994) covers the surrounding reef system and is the main diving area. The park includes:
- Coral reefs: fringing and patch reefs with varying coral health; some bleaching damage from historical warm-water events, partially recovering
- Chole Bay: the main protected anchorage and dive site area — shallower reef with good fish diversity and visibility
- Kinasi Pass: channel dive with currents, larger pelagic species, and good soft coral
- Outer reef: further offshore, stronger current, bigger fish — suitable for experienced divers
Dive operators are located primarily in Kilindoni and around the main lodges. There are no large dive centres with hundreds of guests per day — this is small-operation, uncrowded diving. For many divers, that is itself the point.
Visibility on Mafia's reefs is generally good but varies by season and site. The wet season (March–May) can reduce visibility temporarily. October–March (whale shark season) also tends to have clear water on the reef sites used for whale shark snorkelling.
Getting to Mafia and what to expect
How to get there
The practical access route is by light aircraft:
- From Dar es Salaam: approximately 30 minutes (closest and most frequent connections)
- From Zanzibar (ZNZ): approximately 20 minutes
- From Arusha: approximately 3 hours (usually with a stop in Dar or Zanzibar)
There is no reliable scheduled ferry service to Mafia — the sea crossing from the coast is rough and ferry connections are unreliable. Flights are the practical choice for nearly all visitors.
Jumeirah Thanda Island
The most prominent accommodation associated with Mafia is actually on the nearby Shungimbili Island: Jumeirah Thanda Island, a sole-occupancy ultra-luxury property (the entire 5-hectare island, all marine facilities, rented exclusively to one group). Rates from USD 40,750 per night exclusive-use, fully all-inclusive (meals, drinks, activities, water sports). Accessible by helicopter from Dar es Salaam (~35–45 minutes). This is one of East Africa's most expensive and exclusive properties and exists in a different market category from Mafia's other accommodation. More than 75% of Thanda Island's staff are sourced from Mafia Island communities.
Accommodation on Mafia itself
Mafia proper has a small number of eco-lodges and guesthouses in and around Kilindoni, as well as a few more remote beachside options. None are five-star; most are simple, well-run, diving-focused properties. Expect generator-powered electricity in places, limited mobile data, and an emphasis on early nights and early morning dives. This is part of the appeal if you're looking for it; plan accordingly if you're not.
What Mafia is not
Mafia is not a substitute for Zanzibar's main island if you want beach resort facilities, nightlife, or a wide range of restaurants. It is a destination for people specifically interested in whale sharks, marine conservation, or genuinely remote island ecotourism. If that is not the primary draw, the access effort does not justify the visit.
Mafia Island — questions answered
When can you see whale sharks at Mafia Island?
October–March (peak November–February). Legally protected in Tanzania; Mafia is an IUCN Important Marine Area for whale shark conservation. Standard snorkel trip: USD 60, some operators up to USD 120.
How do you get to Mafia Island?
By light aircraft: 30 min from Dar es Salaam, 20 min from Zanzibar, ~3 hours from Arusha. Coastal Aviation and charter operators fly into Mafia (MFA). No reliable ferry — flights are the practical option.
Is Mafia touristy?
No — very limited infrastructure. Eco-lodges only, no resort development, no beach bars, almost no tourist crowds. The island is genuinely remote and undeveloped by East African island standards.
What is Mafia Island Marine Park?
A designated Marine Park (MPRU, Act 29/1994) protecting coral reef, seagrass, mangroves, and sea turtle nesting beaches around Mafia. Five sea turtle species occur in Tanzanian waters; all are protected.
What is Jumeirah Thanda Island?
A sole-occupancy ultra-luxury island on nearby Shungimbili Island, from USD 40,750/night exclusive-use. Accessible by helicopter from Dar (~35–45 min). One of East Africa's most exclusive properties. 75%+ of staff from Mafia Island community.
More island and coastal planning
Tim Hennig, General Manager, Boutique Hotel Matlai, Michamvi Pingwe, Zanzibar.
I live and work on Zanzibar's east coast year-round — managing Matlai, diving the reefs, watching the seasons. If you have a question the guides don't answer, I'm happy to help.
Get in touch