Untouched coral walls descending to 90 metres. Manta rays gliding over cleaning stations. Three million clove trees scenting the hills. Pemba is East Africa's finest diving destination — and one of the world's best-kept secrets.
Pemba is what Zanzibar may have looked like fifty years ago — before the resorts, before the crowds, before the world discovered it. A wild, rolling island where clove trees outnumber tourists, and the reefs below the surface rank among the finest thirty in the world.
Known in Arabic as Al Jazeera Al Khadra — the Green Island — Pemba is the second-largest island in the Zanzibar Archipelago, sitting 50 kilometres north of Zanzibar (Unguja) and approximately 50 kilometres off Tanzania's mainland coast. Its 980 km² of rolling, fertile interior is a patchwork of valley forests, coconut palms, breadfruit groves, and no fewer than three million clove trees — making Pemba the world's most productive source of cloves, producing many times more than Zanzibar despite receiving a fraction of the attention.
First settled by Omani traders at the start of the 10th century, Pemba's cultural identity is distinct from mainland Tanzania — closer in spirit and custom to the broader Swahili Coast tradition, and fiercely independent in character. The island was a key centre of the Indian Ocean spice trade for centuries, and its relative isolation has preserved an authenticity of landscape and community that the more visited parts of Tanzania have long since lost.
Beneath the surface, Pemba reveals its greatest treasure. The Pemba Channel — a deep oceanic trench running along the island's western coast — creates conditions of extraordinary marine productivity: near-vertical coral walls descending to 90 metres, Njao and Fundo Gaps hosting schools of barracuda and occasional hammerhead sharks, Misali Island's unbroken coral gardens, and the legendary Manta Point cleaning station where reef mantas gather from October to December. Haven Trails arranges expert access to Pemba Island's diving, combining it with Zanzibar or a Northern Circuit safari for an unforgettable Tanzania itinerary.
Pemba's dive sites stretch the full length of the island — from the rolling underwater hills of the far north to the near-vertical walls of the Njao and Fundo Gaps, the pristine coral gardens of Misali Island, and the legendary Manta Point cleaning station in the south.
Pemba's reefs are the most spectacularly healthy in East Africa — and among the thirty finest in the world. Coral-covered walls, vast gorgonian fans, enormous healthy bommies, and a pelagic fish diversity that includes chevron barracuda, yellowfin tuna, giant trevally, manta rays, white-tip reef sharks, and occasional hammerheads. Year-round water temperature of 26°C and visibility reaching 30–40 metres create conditions that rival the world's most celebrated dive destinations. Conservation programmes running since 2006 have actively protected Pemba's marine ecosystem.
Open Water to Technical · All YearPemba produces more cloves than Zanzibar — despite receiving a fraction of the visitors — making it the world's most productive source of this spice. The island's rolling interior is a patchwork of clove, coconut, mango, breadfruit, and banana plantations interspersed with deep valley forests. Guided tours of Pemba's working spice farms reveal a living agricultural heritage completely free of the tourism veneer of Zanzibar's spice tour industry. The scent of cloves hangs in the warm air across the island's interior — a sensory experience unlike anywhere else.
Farm Tours · Ngezi Forest · Cultural ImmersionPemba's beaches are among the most pristine and least visited in East Africa — wide stretches of white sand fringing clear turquoise water, accessible by dirt tracks through clove plantations, with no beach vendors, no resort sunbeds, and no crowds. The island's terrain — rolling hills intersected by deep inlets and mangrove estuaries — creates intimate, sheltered coves that feel genuinely undiscovered. For travellers who have found Zanzibar's popular beaches too busy, Pemba offers the Indian Ocean at its most pristine and personal.
Untouched · Mangrove Inlets · SnorkellingPemba's terrestrial wildlife offers a remarkable complement to its marine life. The Ngezi Forest Reserve — a rare patch of ancient coastal forest on the island's northern tip — is home to the Pemba flying fox (a large endemic fruit bat with a wingspan approaching a metre), several endemic bird species including the Pemba sunbird and Pemba white-eye, coconut crabs, and bush babies visible at night. The island sits on major migratory bird routes and receives exceptional avifauna diversity across the year. Snorkellers staying at island lodges regularly encounter flying foxes crossing the bay at dusk.
Ngezi Forest · Endemic Species · Night SafariThe Pemba Channel is one of the Indian Ocean's most biologically productive environments. The deep oceanic trench running along the island's western coast funnels nutrient-rich upwellings into the reef system, creating conditions that support an extraordinary concentration of both reef species and large pelagic fish. The channel drops to over 700 metres in places — and the reef walls that mark its edge are some of the most dramatic and life-rich dive environments in Africa.
Pemba's coral formations are in a class apart — the most spectacularly healthy in East Africa, with extensive hard coral coverage that survived the 1998 bleaching event better than almost any reef in the Western Indian Ocean. Giant bommies surrounded by clouds of reef fish, vast gorgonian sea fans, unbroken fields of staghorn coral, and near-vertical walls festooned with soft corals and sea whips characterise the island's premier sites.
Above water, the Ngezi Forest Reserve protects the last remnant of Pemba's ancient coastal forest and its unique terrestrial fauna. The reserve is best visited at dawn and dusk, when the island's endemic flying fox colony emerges — an extraordinary spectacle as thousands of large fruit bats take flight over the forest canopy. Bush babies are reliably spotted on night walks through the reserve's boardwalk trails.
Pemba Island is one of the finest places in the world to dive at any level — from your first Open Water certification to advanced technical diving at depth. The island's PADI and RAID-certified dive centres provide world-class instruction, equipment, and guiding, with a safety record that rivals the industry's best. Full-day dive excursions, multi-day packages, PADI courses, and technical dives to 60m are all available from resident operators who have explored and mapped these reefs for decades.
Pemba Island can be dived for most of the year, with conditions varying by season. The optimal diving window runs from October through March, when visibility peaks and manta ray encounters are most likely.
East Africa's finest reef system, a world-class wall diving, and a wild island almost entirely undiscovered. Let Haven Trails design your Pemba expedition.
