Cocos Island
A remote Costa Rican seamount famous for its schooling scalloped hammerheads — a 36-hour liveaboard crossing to one of the planet's great shark dives.
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Frequently asked questions
When is the best time to dive Cocos Island?
Diveable year-round by liveaboard. The dry season Dec–May has better visibility; the rainy season Jun–Nov brings more plankton and larger hammerhead aggregations (but greener water). Currents are strong throughout — an advanced destination.
Is Cocos Island suitable for beginners?
It depends on the site — some are gentle, others are current-swept or deep and better for advanced divers. Every site page states its difficulty and who it suits; always dive within your limits and with a qualified guide.
Is Cocos Island a liveaboard or resort destination?
Many of the signature sites here are reached by liveaboard; it varies by itinerary. Liveaboards cover more ground and reach remote sites, while resorts and day boats offer more flexibility.
What marine life can you see in Cocos Island?
Each site page lists the marine life recorded there, layered with nearby scientific species observations and ocean data. Wildlife is seasonal and never guaranteed — timing your trip to the right season improves your odds.