
Undersea 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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5°31′N 87°04′W · 550 km off Costa Rica
Schools of hundreds of scalloped hammerheads, silvertips, whale sharks and tiger sharks, 36 hours from the mainland. This is the field guide to diving Cocos Island.
Find your boatCocos can only be reached on a liveaboard. These are the four that make the crossing.

Undersea Hunter Group
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
Check dates
Undersea Hunter Group
A 130-foot expedition cruiser and the home of the DeepSee submersible, built for filmmakers and serious photographers.
11 and 14 day expeditions
Check dates
Aggressor Adventures
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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Aggressor Adventures
The newer of Aggressor's two Cocos boats, sailing the same 36-hour crossing from Puntarenas.
8, 10 and 12 night charters
Check datesPinnacles, cleaning stations and submerged rocks around the island.
Dirty RockLocated at the western part of Cocos Island adjacent to the famous waterfall, Dirty Rock has a similar…
Bajo AlcyoneLocated in the eastern side of Cocos Island, this reef was named after the expedition ship of Jacques…
ManuelitaLocated just a few hundred meters from Chatham Bay in the northern coast of Cocos Island where your…
Dos AmigosLocated in the south-southwest corner of Cocos Island, Dos Amigos offers you twice the fun with two dive…
Punta MariaIf there is one description that perfectly fits and sets Punta Maria unique from other dive sites is the…
Submerged RockWhile safely moored at Chatham Bay, you will take a 15-minute boat ride using a skiff boat going to the…
Viking RockLocated in the northern coast of Cocos Island, the reefs of Viking Rock will put your multi-level diving…
Lobster RockUnlike any other dive site in Cocos island where water current and surge mostly affects the initial part…
Manta CornerManta corner is one of the dive sites in Cocos Island that can only be accessible when weather…
Shark Fin RockDespite the popularity of Cocos Island as a haven for scuba diving, it does not mean that you can easily…
SilveradoLocated in the northeast corner, Silverado is one of the few places in Cocos Island where Silvertip…78 species pages, from manta rays to the Cocos finch.
Treasure Island
In 1820 Captain William Thompson sailed off with the church treasure of Lima, and legend says he buried it on Cocos. Hundreds of expeditions have dug for it since. None has found it.
Read the storyOnly 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.
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.
Four: Sea Hunter and Argo (Undersea Hunter Group), and Okeanos Aggressor II and Cocos Island Aggressor (Aggressor Adventures).
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.