
Liveaboard · Costa Rica
Premier Diving Expeditions to Cocos Island, Costa Rica — Home of Hammerhead Sharks
Cocos Aggressor is a liveaboard cruising the Costa Rica region. It hosts up to 22 divers on board.
Cocos Island, a remote outpost off Costa Rica, supports a dynamic pelagic marine ecosystem, explored aboard the 37.8-meter Cocos Aggressor. Approximately 550 kilometers from Costa Rica's Pacific shore lies Cocos Island, a solitary peak rising from the deep ocean. This UNESCO World Heritage site is the summit of a submerged volcano, its steep walls and pinnacles creating a complex underwater lands…
Upcoming Departures…
The galley team prepares an impressive array of flavorful meals. Lunches focus on lighter fare such as salads, hot soups, and sandwiches. Dinner service is more robust, featuring a rotating selection of beef, seafood, BBQ, and chicken, concluded with fresh, house-made pastries.
Cocos Island, located 550 kilometers off Costa Rica's Pacific coast, is one of the world's ultimate big-animal diving destinations and a UNESCO World Heritage Site. The island's remote volcanic seamounts attract enormous schools of scalloped hammerhead sharks — often numbering in the hundreds — along with whitetip reef sharks carpeting the rocky ledges at night. Giant oceanic manta rays, whale sharks, and silky sharks are regular visitors, and the deeper waters harbor marlin, sailfish, and yellowfin tuna. Bottlenose dolphins escort dive boats, and massive schools of jacks and barracuda create swirling baitballs against the blue water backdrop. The volcanic rock formations are encrusted with colorful cup corals and black coral trees, creating a dramatic stage for some of the most exhilarating diving experiences on the planet.
Guided Scuba Sessions · Morning, Midday, and Evening Meals
Mandatory National Park charges apply, costing between 350 and 630 USD per individual based on local laws and the chosen route. · Snorkeling Kits
Shuttle services between your accommodation and the boat are arranged for all passengers.
We strongly recommend all guests to purchase comprehensive dive accident insurance and trip cancellation insurance before departure. Dive accident insurance covers medical treatment, hyperbaric chamber costs, and emergency evacuation in the event of a diving incident. Trip cancellation insurance protects your financial investment — not only if you need to cancel or cut short your trip due to personal illness, injury, or other unforeseen circumstances, but also if the trip is postponed or cancelled by the operator due to severe weather, technical issues, or other operational reasons. In the unlikely event of operator insolvency, cancellation insurance can also help recover your payments. Please ensure your policies are valid for the entire duration of your trip and cover the planned activities.
Regulators: 60-90 USD per voyage · Buoyancy Compensators (BCD): 60-90 USD per voyage
Convertible • Lower Deck • 10.03 m²
Discover practical comfort in this cabin, featuring a bunk-style arrangement with a double bed below and a twin bed positioned above. Private facilities include a mirrored cabinet and wardrobe for your convenience. Enjoy daily fresh towels, bathrobes, a hairdryer, and toiletries provided for your stay.
Queen • Main Deck • 11.05 m²
Embrace unparalleled comfort in this personal sanctuary. Featuring a queen-sized bed, this stateroom boasts comprehensive private facilities. Unwind with entertainment on the media player-equipped monitor, while ample storage is provided by a mirrored cabinet, full-length mirror, and wardrobe. For your convenience, daily fresh towels, bathrobes, a hairdryer, and toiletries are thoughtfully provided.
Twin • Main Deck • 11.05 m²
Discover a cozy stateroom situated on the vessel's upper deck, featuring two single beds positioned side-by-side. This personal haven includes a private head and shower, along with a spacious picture window offering views. It serves as an ideal retreat for reading, relaxing between dives, and ensuring you are fully refreshed for the adventures of the following day. The cabin is equipped with a hairdryer, bathrobes, ample closet and drawer space, and individual climate control. Entertainment is provided by a flatscreen TV offering a selection of movies. Guests will also benefit from daily steward service, nightly turndown service, and morning beverage service.
Select a cabin and departure on Cocos Aggressor, and we send a real-time inquiry to the operator. After availability is confirmed, you receive a booking confirmation by email and secure your spot with a deposit.
A deposit (usually 25-35%) is due upon confirmation. The remaining balance is typically due 4-8 weeks before departure, depending on the operator.
After your final payment, you'll receive a travel voucher with meeting point, embarkation time, airport transfer details, packing tips, and your full itinerary.
Most liveaboards depart from a designated marina. Many operators offer airport pickup and transfers — details are in your voucher. We recommend arriving one day before departure.
A valid dive certification (e.g. PADI Open Water), dive insurance, and a valid passport. Some destinations require additional permits or visas — we inform you during booking.
Cancellation terms vary by operator and are in your confirmation. Generally, the earlier you cancel the higher the refund. Changes depend on availability — contact us as soon as possible.
The headline score is the simple average of the category scores shown below (Boat, Crew, Value, Diving, Dive sites, etc.), each weighted equally. The review count reflects how many source reviews back the underlying analysis. When no category breakdown is available for a vessel, the headline falls back to the guest-weighted average across source platforms.
This liveaboard generally offers spectacular diving and service in Cocos Island, with many guests having exceptional experiences. While some consider it a luxury trip, there have been occasional negative experiences.
Based on approximately 27 reviews. Aggregated rating based on reviews from multiple independent dive travel and operator platforms as well as on ratings from our customers. Public statements from diving forums and community platforms may also be incorporated as text into the highlighted praises and critiques. Ratings are independently calculated and are not affiliated with or endorsed by the source platforms.
Book your unforgettable diving adventure aboard the Cocos Aggressor