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Cocos Island Liveaboard

Cocos Island Liveaboard Adventure with Fins Attached Marine Research & Conservation

September 19-30, 2025

Situated in the heart of the Pacific Ocean off the coast of Costa Rica, Cocos Island beckons divers with its reputation as one of the world's premier dive destinations. Imagine descending into crystal-clear waters teeming with schools of hammerhead sharks gliding effortlessly through the depths, graceful manta rays soaring majestically overhead and unique Eastern Tropical Pacific fish life, just waiting to be discovered. Onboard the Cocos Island Aggreessor, you'll experience the ultimate in comfort, gourmet meals prepared by talented chefs and only the most expert guides for each dive. This new liveaboard also features side-by-side bed accommodations and a huge dive deck with plenty of room for everyone.

Alongside Fins Attached scientists, we will be diving with and tagging various sharks, including Scalloped Hammerheads, Galapagos Sharks, white tip reef sharks and Tiger sharks that reside at Cocos Island! In addition, we will have the opportunity to fun dive around the island and have frequent encounters with amazing Eastern Tropical Pacific marine life.

Deluxe Stateroom: $8,125          Master Stateroom: $8,475

  • Roundtrip airport & hotel to vessel transfers
  • 1 night hotel accommodations in San Jose, Costa Rica prior to boarding Cocos Island Aggressor
  • 10 nights accommodations aboard Cocos Island Aggressor (dbl occ)
  • Multiple daily dives & participation in shark tagging and research & presentations
  • All meals and beverages aboard liveaboard
  • National Park fees
  • Nitrox (must be certified)
  • Emergency Evacuation Plan fee
  • Taxes
Not Included:
  • Airfare to/from San Jose, Costa Rica
  • Meals and beverages not mentioned above
  • Personal dive equipment
  • Gratuities
  • Dive Insurance and Trip Cancellation Insurance

Trip Highlights

Air Temperature
Water Temperature
Experience Level
Training Opportunities
65? to 80? 72? to 80? Advanced Diver with experience in currents recommended Any specialty courses requested

Trip Downloads:

Cocos Island Liveaboard Brochure 2025

Required Paperwork:

Denver Divers Travel Participant Terms & Conditions

$1000 deposit due at sign up

Final payment due 90 days from departure

Call Denver Divers at (303) 399-2877 or email us at and schedule your trip today!

About Cocos Island, Costa Rica

Cocos Island National Park, located off the coast of Costa Rica in the Pacific Ocean, is a remote and pristine haven for biodiversity enthusiasts and adventure seekers alike. Recognized as a UNESCO World Heritage Site, this protected area boasts unparalleled marine life, including hammerhead sharks, dolphins, and manta rays, making it a premier destination for diving and snorkeling. Its lush rainforests, cascading waterfalls, and rugged terrain also offer opportunities for hiking and wildlife spotting. With its rich biodiversity and stunning natural beauty, Cocos Island National Park stands as a testament to the importance of conservation efforts in preserving our planet's ecological treasures.

About Fins Attached (From their website)

Historically, research on sharks has been slow and inconsistent. The remoteness and inherent dangers and difficulties of studying sharks in their natural habitat and a lack of funding are to blame. However, we are beginning to understand sharks and their behavior, where sharks go and why they go there. Satellite tags and acoustic telemetry allow for scientists to study migration patterns and shark behavior. This leads to further conservation zones being designated for highly migratory species.

It is important to not only understand shark migratory patterns, but to also identify nursery areas where sharks go to give birth. Marine protected areas (MPAs) must be established to protect these nursery areas so that the young sharks have a chance of surviving to adulthood.

Both satellite and acoustic tags can be equipped to record depth, temperature and location information. This kind of science requires a tremendous amount of money, and this money is usually not available unless the end results could lead to useful applications and profits. Research into sharks for their own sake is more difficult to fund. However, this is essential for their survival. The scientific data is needed to back-up any conservation argument.

Status of shark populations at Cocos Island and other eastern tropical Pacific islands is unknown, although evidence indicates heavy exploitation by fisheries. The Cocos project includes a telemetric study of several species of sharks to determine their movement patterns, connectivity and residency and a shark censusing program to examine population size and dynamics in Cocos Island and other islands in the Eastern Tropical Pacific (ETP). This information is necessary to understand the behavior, ecology, and population state and dynamics of sharks, which will constitute baseline information to implement a management strategy for the conservation of sharks in the region.

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