Cocos Island Aggressor is a 124-foot liveaboard operating from Puntarenas, Costa Rica, offering multi-day dive expeditions to Cocos Island. Designed for stability and long-range crossings, the vessel accommodates up to 22 guests and focuses on extended dive itineraries in one of the Eastern Pacific’s most remote marine environments.
Cocos Island is known for its pelagic-focused diving, particularly large schools of sharks and open-water species. Trips involve a long offshore crossing followed by several days of diving around seamounts and island-based sites.
Facilities & Meals
The vessel includes a spacious indoor salon, sun deck with loungers, deck chairs, and personal storage for dive equipment. Each diver is assigned a storage area, and the dive deck is equipped with 80 cubic foot tanks, weight belts, and weights, with both DIN and K-valve compatibility.
Meals are provided throughout the trip, including breakfast, lunch, dinner, and snacks. The menu includes a mix of American-style meals and local dishes. Soft drinks, coffee, tea, and a limited selection of beer and wine are included, while additional alcoholic beverages may be brought onboard.
Activities
The primary activity is scuba diving, supported by daily dive schedules. Evenings may include fish identification presentations, movies, and informal group activities, or time spent relaxing on deck.
Staying Connected
Due to the remote offshore location, internet and mobile signal are generally unavailable during the trip.
We Think . .
Cocos Island Aggressor suits experienced divers looking for remote, pelagic-focused diving with consistent shark encounters, structured schedules, and extended time at a single offshore destination.
Cocos Island lies in the eastern Pacific Ocean, approximately 550 km off the coast of Costa Rica. The island is a designated national park and is known for its strong currents, seamounts, and open-ocean conditions that attract large pelagic species.
The remoteness of the location means dive trips involve extended crossings and multi-day itineraries focused entirely around the island.
How to Get There
- International flights arrive into San José (SJO), Costa Rica
- Guests typically stay overnight prior to departure
- A two-hour transfer by road connects San José to Puntarenas
From Puntarenas, the vessel departs based on tide schedules and begins the crossing to Cocos Island. At the end of the trip, transfers are provided back to San José or the host hotel. Departure flights should be scheduled after late morning on disembarkation day.
Cocos Island Aggressor accommodates 22 guests across 11 staterooms, all with private bathrooms, individual climate control, media monitor, and standard onboard amenities including toiletries and housekeeping.
Master Stateroom
Located on the upper deck, Master Staterooms include either a queen bed or twin bed configuration. Each room features a large picture window, ensuite bathroom, and additional space compared to lower deck cabins.
Deluxe Stateroom
Located on the lower deck, Deluxe Staterooms include twin beds and two portholes. Each room features a private bathroom and the same onboard amenities as other stateroom categories.
Diving Location Features
Diving at Cocos Island is characterised by strong currents, seamounts, and open-ocean conditions. Depth ranges typically fall within recreational limits, but conditions can be challenging due to surge and current. The area is known for pelagic marine life, including large schools of sharks and other open-water species.
Dive Services
Diving is conducted from the liveaboard using tenders. Tanks, weights, and standard setup are provided, and divers are expected to follow safety protocols appropriate for current diving and offshore conditions.
Trips typically include multiple dives per day over several days at the island following the initial crossing. Dive briefings are conducted before each dive, and equipment storage is managed onboard with assigned diver stations.
Dive Sites
Dive sites around Cocos Island are focused on seamounts and rocky formations where currents concentrate marine life.
Seamount & Cleaning Station Sites
Sites such as submerged pinnacles and seamounts are known for shark activity, where divers may observe schooling hammerheads and other pelagic species in cleaning station areas.
Rocky Reef & Drop-offs
Rock formations and steep drop-offs provide structure for marine life, with fish activity concentrated along current lines.
Current & Blue Water Diving
Many dives involve drifting along current lines or positioning near structures to observe passing pelagic species. Conditions vary daily depending on currents and weather.
Cocos Top Dive Sites
Alcyone
A 600’ long submerged mountain, the top of the mountain is 75’ from the surface. Schooling Hammerheads, Mantas and schooling fish. Possible Sailfish or Marlin.
Big Dos Amigos
This islet features a 45-foot-high arch and 60-foot pinnacle off the southeast side. Look for Rainbow Runners, Yellowtail Snapper, Bigeye Jacks and lobster. Hammerheads swim between the pinnacle and arch.
Bird Island, Chatham Bay
Dove from Chatham Bay, southeast of Manuelita, this site provides a variety of marine life including Frog Fish, lobsters, morays, rays, White Tip Sharks and Hammerheads. There is even a cleaning station.
Dirty Rock
A large island with schools of Marble Rays and Hammerheads.
Lone Stone
Schooling Marble Rays and Mobula Rays.
Manuelita
The northeast corner has asheer wall. Lots of White Tips, Marble Rays and schools of Creoles.
Special Sightings
Whale Sharks, mating Eagle Rays, Sail Fish, mating White Tip Sharks, False Killer Whales.
Ubing Rock, Wafer Bay
This 300’ rock begins at 20’ and drops to a 110’ sandy bottom. The southeast slope attracts schooling Hammerheads.
Trip dates & availability
Please see pricing table below the availability panel for inclusions, exclusions, and extras.
Aggressor Adventures Fleet Extras Payable
| AUD | USD | ||||||||
| Complete Set of Rental Gear (includes BC, Regulator, Computer, Night Dive Light, Mask, Fins, Snorkel) | |||||||||
| 7 Nights | 175 | USD | | | 175 | |||||
| 10 Nights | 260 | USD | | | 260 | |||||
| Dive Computer | |||||||||
| 7 Nights | 60 | USD | | | 60 | |||||
| 10 Nights | 90 | USD | | | 90 | |||||
| Nitrox Unlimited | |||||||||
| 7 night charters | 100 | USD | | | 100 | |||||
| 10 night charters | 150 | USD | | | 150 | |||||
| Important Information | |||||||||
| This liveaboard's prices are in USD. The AUD prices shown are based on the current exchange rate. The price paid in AUD will be based on the actual exchange rate at the time any payments are made. | |||||||||
