Beyond Unguja
Zanzibar Islands Guide
The short answer
Three islands, one archipelago, three different reasons to go.
Tanzania has three main tourist islands. Zanzibar — officially Unguja, the one almost everyone means — is the beach and culture island. Pemba, 30–40 minutes north by light aircraft, is the diving island: steep walls, strong current, almost no beach tourism. Mafia, roughly 60 minutes south and usually via Dar es Salaam, is the whale shark and marine park island: the season runs November to March, most reliably November to February. And on Unguja's own southwest coast sits the dolphin coast — Kizimkazi and Menai Bay — which needs no flight at all. A single Tanzania tourist visa covers all of it.
| Zanzibar (Unguja) | Beaches, Stone Town, kite, the east coast |
| Pemba | Wall diving · 30–40 min flight from ZNZ |
| Mafia | Whale sharks Nov–Mar, most reliable Nov–Feb · ~60 min flight, often via Dar |
| Dolphin coast | Kizimkazi & Menai Bay · southwest Unguja |
| Connector airlines | Coastal Aviation · Auric Air |
| Realistic combo | Zanzibar + one island, 10–14 days |
| Last verified | August 2026 |
The archipelago
Three islands, three trips
Pemba is the island almost nobody reaches. Zanzibar absorbs nearly all the tourist traffic, which is precisely why divers and eco-travellers seek Pemba out. Roughly 1,000 km² of hilly, forested land with a deeply indented coastline, mangrove channels and clove plantations that once made it one of the world's main clove producers, it is called the Green Island for good reason — the hills rise straight from the sea and the interior is dense forest. Around 400,000 people live there, mostly from cloves, fishing and seaweed farming. Underwater it is a different proposition entirely: the channel's strong tidal currents pull cold, nutrient-rich water up from depth, and the walls that fall from 10–15 metres into the dark carry soft coral, sea fans and schooling fish in the kind of density that brings divers back. What Pemba does not have is a beach holiday — no broad white sand, no organised beach bars, no resort infrastructure in the Zanzibar sense. Chake Chake, the main town, has markets, a hospital and government offices rather than restaurants and souvenir shops. The full Pemba guide covers the dive sites, the two lodges that matter, and the endemic flying foxes.
Mafia is the least-visited of the three. No beach clubs, no kite schools, no resort strip. What it has, from November to March and most reliably from November to February, is Rhincodon typus — the largest fish in the ocean — congregating off the south coast around Ras Kisimani to feed on surface plankton, in one of the most reliable whale shark aggregations in the Indian Ocean. Mafia Island Marine Park, established in 1995, covers approximately 822 km² and takes in Chole Bay, Juani Island, Jibondo Island and the waters around them; the Chole Bay dive sites are among the most biodiverse in East Africa, with coral bommies rising from 5–15 metres in clear water and hawksbill turtles that are not spooked by people. Chole Island itself, a short boat crossing away, is a ghost-town of coral-rag ruins from the Arab trading era. It is a marine-wildlife destination, not a beach one — the shores are mangrove-fringed and the lodges sell reef access, not sand. The Mafia guide has the season, the encounter protocol and the honest months to avoid.
Zanzibar itself stays the anchor of almost every trip: white sand and coral reef, UNESCO-listed Stone Town, kitesurfing at Paje, the quiet southeast around Michamvi. It is where the flights land and where the infrastructure lives, and for the large majority of visitors it is also where the whole holiday should stay. The question this guide exists to answer is not "which island is best" — it is whether a second island earns the two internal flights it costs you. The island-hopping guide works that through with real itineraries.
Connections
Getting between them
The practical connector is light aircraft. Coastal Aviation runs a scheduled coastal circuit taking in all three islands plus Dar es Salaam, Arusha and the northern safari airstrips; Auric Air covers much the same ground. Routes are hub-and-spoke rather than island-to-island: Zanzibar to Pemba (ZNZ–PMA) is usually direct at 30–40 minutes, while Zanzibar to Mafia (MFA) generally runs via Dar es Salaam and adds 20–30 minutes. One-way fares run USD 100–150 to Pemba and USD 130–180 to Mafia. Book with the airline or through your lodge — schedules change seasonally and are not always visible on global booking platforms.
By sea, and by road
The ferry, the dhow and the drive south
There is one real ferry in this story. Azam Marine runs Stone Town to Mkoani on Pemba's south coast in about 3–4 hours; deck class costs around USD 20–25 and first class USD 30–35. It is cheaper than the flight and considerably longer, and on a rough day it is a genuine crossing rather than a scenic one — but for travellers with time it is an experience in itself. Note the geography before you book it: Pemba's airport (PMA) sits near Chake Chake in the middle of the island, while Mkoani port is in the south. Between Zanzibar and Mafia there is no regular passenger ferry at all. Boats move, but nothing on a schedule you can plan around, so for Mafia flying is the only realistic option unless you are joining a private charter.
The fourth chapter of this cluster needs no aircraft and no ferry. The dolphin coast is on Unguja itself, on the southwest side: Kizimkazi, two villages facing a sheltered bay about 40 minutes south of Stone Town and 40–45 minutes from the east coast, and Menai Bay Conservation Area, gazetted in 1997 and covering approximately 470 km² — the largest marine protected area on the island — with boats leaving from Fumba village, 18 kilometres south of Stone Town. Kizimkazi has resident pods of Indo-Pacific bottlenose and spinner dolphins in all twelve months; Menai Bay adds the elusive Indo-Pacific humpback dolphin and the seagrass meadows that still hold Zanzibar's last 50–100 dugongs. Both reward the same discipline: go early, go small, and go with an operator who does not chase. The dolphin guide covers the prices, the ethics and the 1107 CE mosque at Kizimkazi Dimbani.
Timing
When to go to each
Mafia runs on the whale shark calendar. The season runs November to March; sightings are most reliable November to February and thin out in March, and through that reliable stretch sighting rates on any given morning run around 70–80%. The plankton blooms that feed it start from October, and October is a shoulder month that can surprise either way — some early sharks, some rough days, mixed reports year to year. The long rains run April through June: the seas off the south coast turn rough, the sharks are gone, and most lodges close, so a May or June trip risks arriving to a shut property and no boats running. July through September is drier but still outside the season; the diving is good if that is the goal, but whale shark sightings are unlikely. If the sharks are the point, build the flight around November–March, aim at the November–February stretch, and book beds six months out.
Pemba dives year-round, with October to February bringing the calmest seas and the clearest water. That overlap is what makes the Zanzibar + Pemba combination work neatly in the same months as a classic beach stay. It is not a learner destination, though: the signature dives are current-driven walls that want drift-diving comfort and at least an advanced open water certification. If that is not you yet, learn in the flat lagoon at Paje first and come back for the walls.
The dolphin coast has no closed season — both species at Kizimkazi and both at Menai Bay are year-round residents, so the limiting factor is sea state rather than month. June to September, the Kusi season, the wind can build significantly by 09:00, which makes late departures choppy and dolphin behaviour harder to read; June to August also brings the choppiest southeast trade wind seas in Menai Bay. The calmest water is October to March, and the short-rain lull in January and February is the smoothest of all. Whatever the month, morning beats afternoon: boats leave at 06:30–07:00 for a reason.
The chapters
The islands, in four parts
Pemba Island
Diving walls, clove farms and the island most visitors never reach.
Read the guide →Mafia Island Whale Sharks
Season, boats and what a whale-shark morning is really like.
Read the guide →Tanzania Island Hopping
Zanzibar, Pemba and Mafia in one trip — flights, days, order.
Read the guide →Dolphins in Zanzibar
Kizimkazi and Menai Bay, done early, small and without the chase.
Read the guide →Who it suits
Whether a second island is worth it
Island hopping makes sense for travellers with more than ten days, a specific interest in diving or marine wildlife, and a reasonable tolerance for small-aircraft logistics. Many people enjoy that sector in its own right — low altitude over turquoise water, small airstrips, minimal formality. It is not seamless, though: schedules change, the aircraft seat six to twelve, and a lodge without generator backup on an island whose next flight is tomorrow tests a patience that beach-only travellers did not sign up for.
The honest version we give guests: divers should seriously consider Pemba, because the in-shore Zanzibar reef is good but Pemba is in a different category. Whale shark seekers should consider Mafia, in the right season. Everyone else — the majority — gets more out of two extra nights on the east coast than out of one rushed night somewhere else, and the dolphin coast delivers a genuine wildlife morning without a single internal flight. The east coast, done properly, fills ten days without leaving.
Good to know
The questions guests ask before they add an island
Collected from the pre-arrival conversations we have every week, answered the way we answer them on WhatsApp.
Can I do Pemba as a day trip from Zanzibar?
Not sensibly. The flight is only 30–40 minutes each way, but Pemba is a full day's travel from Zanzibar and back once transfers and schedules are counted, and it is realistically worth two to four nights to justify the effort. Most divers who make the trip spend three nights and do five or six dives.
When is whale-shark season on Mafia Island?
The season runs November to March; sightings are most reliable November to February and thin out in March. Sighting rates through the reliable stretch run around 70–80% on any given morning — high for a wild animal, but not a guarantee, which is why three nights is the minimum planning assumption. Outside November–March the sharks are not present in meaningful numbers.
Do Pemba and Mafia need a separate visa?
No. Zanzibar (Unguja), Pemba and Mafia all fall within Tanzania and are covered by the standard Tanzania tourist visa (USD 50). The mandatory ZIC insurance (USD 44/adult) applies to all Zanzibar Archipelago islands including Pemba; confirm the ZIC requirement for Mafia with your lodge, as coverage details have evolved.
Which island is best for diving?
Pemba, clearly — steep wall dives in current, soft coral and sea fans, mantas and reef sharks, and the protected coral sanctuary at Misali Island. Mafia's Chole Bay is the gentler alternative, with bommie coral from 5–15 metres and drift dives at Juani and Jibondo. Pemba's current dives need drift-diving comfort and at least an advanced open water certification.
Where do you see dolphins in Zanzibar?
On the southwest coast. Kizimkazi has resident pods of Indo-Pacific bottlenose and spinner dolphins and boats leave at 06:30–07:00; Menai Bay Conservation Area, reached from Fumba village, is the quieter alternative with a second species and seagrass beds that still hold dugongs. Shared trips run USD 20–40 at Kizimkazi and USD 25–50 from Fumba.
How many islands can I fit into one trip?
Two, comfortably. Zanzibar plus Pemba works in 10–12 days; Zanzibar plus Mafia in 12–14. Attempting all three needs 14+ days, because two internal flights and their transfers leave only about two nights on each island — not enough anywhere. Most guests are better served going deep on two.
Whichever islands you add —
— one of them should be the quiet one. Six rooms, east coast, tide table included.
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