The pillars of the five-kilometre Zeelandbrug bridge spanning the Oosterschelde estuary, where tidal currents deliver nutrients that support cuttlefish breeding grounds, rare North Sea nudibranchs, and spectacular anemone colonies on the concrete structures.

Depth28m

Levelintermediate

Entryshore

Currentstrong

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Cook Islands

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Rarotonga Reef Passages

Avarua · Rarotonga · Cook Islands

Natural passages through Rarotonga's fringing reef where tidal currents attract eagle rays, reef sharks, and dense schools of trevally in clear South Pacific water with vibrant coral drop-offs.

Denmark

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Middelfart Bridge Fjord

Middelfart · Funen · Denmark

A narrow strait between Funen and Jutland where powerful tidal currents attract massive aggregations of harbour porpoises, creating Denmark's most exciting cold-water drift dive.

Little Belt Bridge

Middelfart · Southern Denmark · Denmark

A tidal channel beneath the Little Belt Bridge where powerful currents attract massive schools of fish, porpoises, and dense kelp forests along Denmark's most biodiverse strait.

Fiji

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Naigoro Passage

Vunisea · Kadavu Province · Fiji

A current-swept passage on Kadavu's southern coast where manta rays cruise cleaning stations and pristine soft corals blanket the walls in electric purples and pinks.

Nigali Passage

Gau Island · Lomaiviti Group · Fiji

A narrow reef channel cutting through Gau Island's barrier reef where tidal currents concentrate massive schools of grey reef sharks, barracuda, and eagle rays in a concentrated predatory spectacle.

Wakaya Passage

Suva · Lomaiviti Group · Fiji

A nutrient-rich channel between Wakaya and Makogai islands where manta rays aggregate in large numbers and hammerhead sharks patrol the deeper reaches of the passage during the cooler months.

Pacific Harbour – Beqa Passage

Pacific Harbour · Viti Levu · Fiji

A deep channel off Fiji's southern coast where organized shark feeds bring up to eight bull shark species within arm's reach, creating one of the world's most intense multi-species shark encounters.

Manta Ray Island

Nadi · Yasawa Islands · Fiji

A world-renowned manta ray cleaning station in a shallow channel between Yasawa islands, where reef mantas gather in numbers to be cleaned by wrasses during the dry season.

French Polynesia

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South Pass (Tumakohua)

Tetamanu · Tuamotu Archipelago · French Polynesia

The densest shark population on Earth, where over 700 grey reef sharks form a living wall in a pristine UNESCO pass.

Tiputa Pass

Tiputa · Tuamotu Archipelago · French Polynesia

A legendary Tuamotu drift dive where hammerheads, dolphins, and grey reef sharks converge in a thrilling ocean pass.

Indonesia

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Alor Pantar Strait

Kalabahi · Alor · Indonesia

A powerful strait between Alor and Pantar islands where oceanic currents funnel through creating extraordinary pelagic encounters, dramatic thermoclines, and some of Indonesia's most exhilarating drift diving.

Rinca Channel

Labuan Bajo · Komodo National Park · Indonesia

A nutrient-rich channel between Rinca and Nusa Kode islands in southern Komodo delivering thrilling drift dives with manta rays, reef sharks, and dense schools of fish in powerful tidal currents.

Maldives

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Huvadhoo Kandu

Thinadhoo · Gaafu Dhaalu Atoll · Maldives

A powerful channel dive on the outer rim of Huvadhoo Atoll where nutrient-rich currents attract dense schools of grey reef sharks, hammerheads, and pelagic species in one of the Maldives' least-dived atolls.

Rasdhoo Madivaru Channel

Rasdhoo · Rasdhoo Atoll · Maldives

A thrilling early-morning channel dive at Rasdhoo Atoll's outer edge, famous for hammerhead shark encounters in the pre-dawn darkness and strong oceanic currents.

Broken Rock

Dhigurah · South Ari Atoll · Maldives

A massive coral formation split in two by a dramatic swim-through canyon in South Ari Atoll, where vibrant soft corals cover every surface and reef sharks patrol the channel entrance.

Rangali Madivaru

Rangali Island · South Ari Atoll · Maldives

A current-swept channel entrance in South Ari Atoll famous as one of the world's most reliable manta ray cleaning stations, where reef mantas gather year-round for cleaning by wrasses and butterflyfish.

Guraidhoo Corner

Guraidhoo · South Male Atoll · Maldives

A spectacular channel corner in South Male Atoll where grey reef sharks, tuna, and trevally gather in powerful currents along a dramatic drop-off.

Villingili Kandu

Male · South Male Atoll · Maldives

A thrilling channel dive in the South Male Atoll where powerful incoming currents funnel grey reef sharks, eagle rays, and massive Napoleon wrasses past divers stationed on a coral-covered ledge.

Fotteyo Kandu Channel Dive

Felidhoo · Vaavu Atoll · Maldives

A premier channel dive in Vaavu Atoll where incoming currents funnel grey reef sharks, Napoleon wrasse, and dense pelagic schools past overhangs decorated with spectacular soft coral growth.

Miyaru Kandu

Felidhoo · Vaavu Atoll · Maldives

The famous 'Shark Channel' of Vaavu Atoll where grey reef sharks gather in huge numbers along a dramatic ocean-facing reef wall.

Vattaru Kandu

Felidhoo · Vaavu Atoll · Maldives

A deep channel on Vaavu Atoll's western rim where incoming currents concentrate grey reef sharks, eagle rays, and schooling fish in one of the Maldives' most dramatic and consistent drift dives.

Mayotte

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Passe en S

Dzaoudzi · Petite-Terre · Mayotte

An S-shaped channel cut through Mayotte's barrier reef where tidal currents funnel pelagic visitors into a tropical lagoon, creating one of the Indian Ocean's most accessible big-animal drift dives.

Micronesia

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Manta Ray Village (Mi'l Channel)

Colonia · Yap State · Micronesia

Year-round guaranteed manta encounters at Yap's shallow cleaning stations, where reef mantas glide within touching distance.

Netherlands

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Grevelingen Lake

Bruinisse · Zeeland · Netherlands

A former estuary enclosed by the Delta Works that has become Northern Europe's largest saltwater lake, where the absence of tidal currents allows year-round diving among dense anemone fields, nudibranchs, and the ghostly remains of drowned villages.

Norway

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Saltstraumen

Bodø · Nordland · Norway

The world's strongest tidal current, where divers descend during brief slack windows into a channel bursting with enormous fish, giant kelp, and cold-water corals.

Palau

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German Channel

Koror · Rock Islands · Palau

A man-made channel turned world-famous manta ray cleaning station where gentle giants hover just metres from mesmerised divers.

Ulong Channel

Koror · Rock Islands · Palau

A spectacular drift dive through a narrow channel in Palau's Rock Islands where strong currents funnel divers past grey reef sharks, eagle rays, and dense coral gardens flourishing in the nutrient-rich flow.

Papua New Guinea

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Kavieng Albatross Passage

Kavieng · New Ireland Province · Papua New Guinea

A deep channel between New Ireland and a small offshore island near Kavieng where powerful tidal currents funnel through a narrow passage, attracting grey reef sharks, silvertip sharks, dogtooth tuna, and schooling barracuda in one of Papua New Guinea's premier shark dives.

Philippines

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Verde Island Passage

Batangas City · Calabarzon · Philippines

The narrow strait between Luzon and Verde Island, scientifically documented as the center of the center of marine shore fish biodiversity on Earth, where nutrient-rich currents sustain an unmatched density of species on dramatic underwater terrain.

Surigao Strait

Surigao City · Eastern Visayas · Philippines

A historically significant strait between Leyte and Mindanao where strong currents sweep nutrients across deep-water reefs, attracting whale sharks, manta rays, and WWII wreck remnants in seldom-dived waters.

Seychelles

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Aldabra South Channel

Assumption Island · Aldabra Group · Seychelles

The wild southern channels of Aldabra Atoll where powerful Indian Ocean swells meet pristine coral walls, drawing hammerhead sharks, manta rays, and giant groupers to one of the most remote dive sites on Earth.

Desroches Atoll

Desroches Island · Amirantes Group · Seychelles

A remote coral atoll in the Amirantes Group where channel dives through the reef deliver encounters with grey reef sharks, Napoleon wrasses, and eagle rays in some of the Seychelles' most pristine and least-visited waters.

Channel diving

Channel dive sites are available across multiple countries and regions. Browse individual site pages for detailed conditions.

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