Okeanos Aggressor II is a 120-foot liveaboard operating from Puntarenas, Costa Rica, running extended dive trips to Cocos Island. The vessel accommodates up to 22 guests and is designed for long crossings and multi-day diving in a remote offshore setting.
Cocos Island is known for pelagic diving, especially large schools of sharks and open-water species. Trips include an offshore crossing followed by several days of diving around seamounts and island sites.
Resort / Vessel Facilities & Meals
The vessel includes a salon, shaded cocktail area, sun deck with loungers, bar, and grill. Each diver has a personal storage space, and the dive deck is equipped with 80 cubic foot tanks, weights, and both DIN and K-valve options.
Meals are served daily, including breakfast, lunch, dinner, and snacks. The menu combines American-style dishes with local options. Soft drinks, coffee, tea, and a limited selection of beer and wine are included.
Activities
Diving is the main activity, with a planned schedule each day. Evenings may include fish identification talks, movies, or time spent relaxing on deck.
Staying Connected
Due to the remote location, internet and mobile signal are not available during most of the trip.
We Think . .
Okeanos Aggressor II suits divers looking for extended trips focused on pelagic encounters at Cocos Island, with consistent access to seamount sites and current-driven diving.
Okeanos Aggressor II operates from Puntarenas, Costa Rica, with trips focused on Cocos Island, located about 550 km offshore in the eastern Pacific. The area is known for strong currents and offshore formations that attract large marine life.
The remote setting means diving is centred on seamounts and rocky structures rather than coastal reefs.
How to Get There
Fly into San José (SJO), Costa Rica
Overnight stay is usually required
Transfer by road to Puntarenas takes about 2 hours
On departure day, guests are transferred to the vessel. After boarding, the yacht departs for Cocos Island. At the end of the trip, transfers return guests to San José. Flights should be scheduled after late morning.
Okeanos Aggressor II accommodates 22 guests across 11 staterooms, all with private bathrooms, air-conditioning, media monitors, and standard onboard amenities including toiletries, bathrobes, and daily housekeeping.
Master Stateroom
The Master Stateroom includes a queen bed and is located on the main deck. It features a private bathroom and storage space.
Deluxe Stateroom
Deluxe Staterooms include a double bed below and a single bunk above, suitable for shared use. Each room has a private bathroom and standard amenities.
Suite
The Suites are larger rooms with either two twin beds or one king bed. These include more space, a private minibar, seating area, and a larger bathroom.
Diving Location Features
Diving at Cocos Island is defined by seamounts, rocky pinnacles, and strong currents. Marine life includes large schools of sharks, rays, and other pelagic species. Conditions can change daily depending on current strength.
Dive Services
Diving is done from tenders, with multiple dives scheduled each day. Tanks, weights, and basic setup are provided. Divers are expected to follow safety procedures suited to offshore and current conditions.
Dive briefings are conducted before each dive, and equipment is stored in assigned spaces onboard.
Dive Sites
Dive sites around Cocos Island focus on offshore formations where currents bring in marine life.
- Seamount & Cleaning Station Sites – Sites such as Bajo Alcyone are known for schooling hammerheads and regular pelagic activity.
- Rock & Pinnacle Sites – Sites including Dirty Rock and Dos Amigos feature rocky terrain, caves, and areas where sharks and large fish gather.
- Reef & Sheltered Sites – Areas such as Manuelita Inside offer calmer conditions and reef structures for easier dives.
- Current & Blue Water Diving – Many dives involve staying near formations or drifting with the current to observe passing pelagic species.
Staying Connected
Email is available onboard through the satellite system. There is a charge for incoming and outgoing email. Private calls may be made from the yacht. When diving at Cocos Island, there is a cell tower with intermittent reception.
Trip dates & availability
Please see pricing table below the availability panel for inclusions, exclusions, and extras.
Cocos Island Aggressor & Okeanos Aggressor II 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 | 70 | USD | | | 70 | |||||
| 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. | |||||||||
