Costa Rica's Cocos Island is one of the world's premier big-animal diving destinations. Located 550km off the Pacific coast, this uninhabited island can only be reached by liveaboard. Expect massive schools of hammerhead sharks, giant mantas, whale sharks, dolphins, and tiger sharks in an untouched underwater wilderness that Jacques Cousteau called "the most beautiful island in the world." Compare all Cocos Island liveaboard expeditions, check real-time departure availability, and secure the best price for your bucket-list adventure. Our team has personally inspected every vessel to ensure you get the quality and safety you deserve.
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Comfortable shared or private cabins. Full-board. 3-4 dives/day at Cocos Island.
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Spacious suites, gourmet dining, nitrox included, rebreather support, small groups.
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Hand-picked by our dive experts — click any vessel to see availability and book.
24-guest yacht with spacious cabins, excellent crew, and optimal Cocos Island itineraries. A top choice for serious pelagic encounters.
20-guest expedition vessel purpose-built for Cocos Island. Known for extended bottom times and flexible dive plans at cleaning stations.
Comfortable 22-guest liveaboard offering great value for Cocos Island expeditions with experienced dive guides.
Book well in advance – Cocos Island liveaboards sell out months ahead, especially for June-November departures. Ensure you have Advanced certification and sufficient dive experience (50+ dives recommended). Bring reef hooks for current-swept cleaning stations. Nitrox certification is highly recommended for multiple deep dives per day.
A premier 115-foot vessel for Cocos Island expeditions, featuring a pro-grade diving platform with integrated equipment hire and technical support.
The waters off Costa Rica, influenced by deep-water upwellings, create a dynamic environment for pelagic species.
Premier Diving Expeditions to Cocos Island, Costa Rica — Home of Hammerhead Sharks
Cocos Island, a remote outpost off Costa Rica, supports a dynamic pelagic marine ecosystem, explored aboard the 37.8-meter Cocos Aggressor.
Discover the aquatic marvels of Cocos Island while enjoying all-inclusive luxury.
Operating in Costa Rica, the 36.6-meter Okeanos Aggressor II serves as a dedicated platform for exploring the region's remote pelagic-rich waters.
Cocos Island diving is possible year-round, but conditions and marine life encounters vary significantly by season. Water temperatures range from 24°C to 28°C, with the best hammerhead action during the cooler months.
Calmer seas, better visibility (20-30m). Good hammerhead sightings. More comfortable crossings.
Peak pelagic activity. Massive hammerhead schools, whale sharks, mantas. Stronger currents, lower viz.
Best of both worlds – improving pelagic activity with still-reasonable sea conditions.
Most Costa Rica liveaboards follow well-established routes that maximise marine life encounters. Here are the most popular itineraries:
36h crossing, 7 days diving at Bajo Alcyone, Dirty Rock, Manuelita, Viking Rock
Extra diving days, remote sites, night dives with whitetip shark hunts
Shorter trip combining Caño Island with 5 days at Cocos Island
Planning your first Costa Rica dive safari? Below you'll find answers to the most common questions – from visa requirements and costs to what marine life awaits you. If anything is still unclear, our team is happy to help.