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Sharks

Hammerhead central: why Cocos is the world's great shark dive

10 Reasons to Dive Cocos

Silvertip Sharks

Giant Manta Rays

The Treasure of Lima

36 hcrossing from Puntarenas
4boats make the trip
78species in our field guide
1997UNESCO World Heritage Site

Pick your boat

Liveaboard is the only way to Cocos. Compare the four and check live dates.

Sea HunterUndersea Hunter Group

Sea Hunter

The Cocos pioneer's workhorse: a long-range expedition boat that has been crossing to the island since the 1990s.

11 and 14 day expeditions

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ArgoUndersea Hunter Group

Argo

A 130-foot expedition cruiser and the home of the DeepSee submersible, built for filmmakers and serious photographers.

11 and 14 day expeditions

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Okeanos Aggressor IIAggressor Adventures

Okeanos Aggressor II

Aggressor's Cocos yacht: all dives from two tenders, with up to 27 dives on the longest charter.

8, 10 and 12 night charters

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Cocos Island AggressorAggressor Adventures

Cocos Island Aggressor

The newer of Aggressor's two Cocos boats, sailing the same 36-hour crossing from Puntarenas.

8, 10 and 12 night charters

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Meet the sharks

Hammerhead SharksSilvertip SharksWhale SharksTiger SharksGalapagos SharksWhitetip Reef SharksSilky SharksThresher Sharks

Dive sites

Eleven famous sites, from Dirty Rock to Bajo Alcyone.

01Dirty Rock02Bajo Alcyone03Manuelita04Dos Amigos05Punta Maria06Submerged Rock07Viking Rock08Lobster Rock09Manta Corner10Shark Fin Rock11SilveradoAll dive sites →

Wildlife & history

FishMammalsBirdsTreasure huntingMapsNews
Giant Manta RaysSpotted Eagle RaysGoliath GrouperCommerson’s FrogfishRosy-lipped BatfishMoorish IdolThe Treasure of LimaTreasures Buried on Cocos

Good to know

How do you get to Cocos Island?

Only by liveaboard dive boat. Trips leave Puntarenas on Costa Rica's Pacific coast and cross about 36 hours each way. There are no flights, hotels or day trips.

Can you stay on the island?

No. Cocos is a national park and a UNESCO World Heritage Site; the only people living there are park rangers. Visitors sleep on board and go ashore only with the rangers' permission.

Which boats go to Cocos?

Four: Sea Hunter and Argo (Undersea Hunter Group), and Okeanos Aggressor II and Cocos Island Aggressor (Aggressor Adventures).

Do you need to be an experienced diver?

Yes. Dives are in open ocean with currents, mostly between 16 and 33 metres (55 to 110 feet), and every dive starts from a small tender.