A spectacular seamount rising from the deep waters of Bligh Passage, blanketed in rainbow-coloured soft corals and surrounded by schools of barracuda and trevally in nutrient-rich upwelling currents.

Depth35M

Levelintermediate

Entryboat

Currentmoderate

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Indonesia

2 sites

seamount

Suanggi Island

Ambon · Banda Sea · Indonesia

A remote volcanic seamount in the Banda Sea shrouded in local superstition, offering pristine walls, big pelagic encounters, and an utterly wild diving experience for expedition-minded divers.

Krakatau Underwater Volcano

Bandar Lampung · Lampung · Indonesia

The submerged volcanic slopes surrounding the Krakatau caldera in the Sunda Strait, where pioneer coral communities colonise young lava flows and the raw geological drama of an active volcanic complex creates diving unlike anywhere else on Earth.

Mexico

1 site

seamount

El Boiler

Cabo San Lucas · Revillagigedo Archipelago · Mexico

A volcanic seamount off Socorro Island where giant Pacific manta rays approach divers for close, extended encounters in deep blue water.

Papua New Guinea

1 site

seamount

Fathers Reefs

Kimbe · West New Britain · Papua New Guinea

A cluster of volcanic seamounts in the centre of Kimbe Bay rising from deep water, famous for pristine hard coral gardens, dense fish aggregations, and as a research site for marine biodiversity studies.

Portugal

2 sites

seamount

Formigas Islets

Vila Franca do Campo · Azores · Portugal

A remote chain of rocky islets and submerged pinnacles in the eastern Azores, designated a marine reserve where mobula rays school in hundreds and blue sharks cruise the nutrient-rich mid-Atlantic waters.

Princess Alice Bank

Madalena, Pico · Azores · Portugal

A legendary open-ocean seamount 90 kilometres from the Azores where vast carousels of mobula rays, giant manta rays, and blue sharks congregate in summer.

Seychelles

1 site

seamount

Shark Bank

Victoria · Mahé · Seychelles

A submerged granite plateau rising from the deep water northwest of Mahé, Shark Bank is the Seychelles' premier pelagic dive site where whale sharks, grey reef sharks, and massive stingrays congregate around the current-swept pinnacle.

Spain

1 site

seamount

Cabo de Palos Islas Hormigas

Cartagena · Murcia · Spain

A marine reserve off southeast Spain where submerged volcanic pinnacles attract the Mediterranean's largest aggregations of barracuda, eagle rays, and enormous dusky groupers, with dramatic underwater topography and exceptional visibility.

Seamount diving

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

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