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Okeanos Aggressor, Costa Rica

Rating 8.7 out of 10 8.7 Fabulous

“Clearly, the dives were superb with hammerhead sharks at all the dives! ”

Romain R, Flag of France France

Highlights

  • Dive with Hammerheads, Eagle rays, and Whales at one of the worlds’ top dive destinations - Cocos Island
  • Soft drinks, iced tea, beer, and wine are complimentary
  • Fully kitted dive deck including personal storage lockers, three-tier camera table with low-pressure air hoses and warm freshwater showers

The Okeanos Aggressor I liveaboard schedules year-round trips to Cocos Island, one of the worlds’ top diving destinations. Diving in Costa Rica means the chance to get up close with schooling hammerheads, mantas, whale sharks, tiger sharks, white tip reef sharks, rays, turtles and huge schools of fish. There is a 36-hour crossing to Cocos Island, but divers will be rewarded with incredible diving and big-fish action and up to 24 dives on the 10-night trip are available. The dive deck is spacious and allows ample room for kitting up, personal gear storage and camera equipment. Nitrox is also available for those certified.

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This liveaboard does not currently have availability online. Please contact us to check availability and rates or browse other liveaboards worldwide
2026
2027
2028

Included: VAT, Hotel Transfer, Alcoholic Beverages, Drinking Water, Soft drinks, Tea & Coffee, Wine with Dinner, Full-Board Meal Plan (All meals), Snacks, Diving Package, Cabin Towels, Complimentary Toiletries, Deck Towels.

Required Extras: Dive Insurance, Chamber Fees (30 USD / trip), National Park Fees (396-554 USD / trip), Port Fees.

Optional Extras: Travel Insurance, Gratuities, Airport Transfer, Extra Dives, Nitrox, Nitrox Course, Rental Gear, Scuba Diving Courses, Snorkel Gear.

Book now, pay later: You can easily place your booking online. We will then hold the spaces for you and you can confirm with a payment later.

* Extra fees are shown per person.

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Best Price Guaranteed You're getting the lowest rate. We work closely with the boat operators on a daily basis to deliver you the best possible rates. In case you find our rate cheaper somewhere else we will either match it or beat it.

Drawings & Vessel Layouts

#deckplan floorplan

Cabin Types

Okeanos Aggressor Reviews

  • Rating 8.7 out of 10
  • 8.7 Fabulous
  1. Vessel
    7.6
  2. Crew
    9.4
  3. Food
    9.6
  4. Diving
    8.8
  5. Value
    8.2
  • Rating 9.6 out of 10
  • 9.6 Exceptional
  • John P
  • Flag of France France

Great Liveaboard for an amazing place

Cocos is the best diving I have ever done. Sharks (a lot of) on every dive. The staff, food, activities and just everything proposed lives up to the high expectations that is Diving Cocos Island. Will go back ASAP!!!

Recommended for
Cocos Island - The Dives - The Staff
  • Rating 9.2 out of 10
  • 9.2 Superb
  • Chad L
  • Flag of United States United States

Top notch in every aspect!

The diving was incredible- hammers on every dive (and whitetips, blacktips, Galapagos, silvertips), lots of rays, schools of jacks/snapper/grunts, frog fish, flounder, lobster, and hundreds of other types of fish. Swimming under waterfalls our playing soccer on the beach between dives...all in paradise. I can't wait to go back!

Recommended for
I have been on a number of liveaboards and the Okeanos/Cocos was #1 in both the diving and the staff. We were seriously well taken care of- friendly staff, consistently excellent food, efficiently managed dives,, and oh my, what dives! Healthy reefs teaming with life on all scales, all in the midst spectacularly beautiful location!
  • Rating 9.6 out of 10
  • 9.6 Exceptional
  • Nicholas B
  • Flag of United Kingdom United Kingdom

Okeanos aggressor and cocos rock

Fantastic experience, long way out, but makes it exclusive, fantastic amount of shark encounters, great boat and crew, great food, a must for all serious divers!

Recommended for
Sharks, sharks and what must be the best night dive in the world
  • Rating 9.6 out of 10
  • 9.6 Exceptional
  • Petra H
  • Flag of Switzerland Switzerland

Extraordinary

The crew was super friendly and helpful. Everyday fresh and super delicious food. The dive sites were selected by the national park, therefore it can happen that you dive several times at the same site but no dive is like another. The dive guides were experienced and taking care of the divers very well.

Recommended for
Crew, Food,

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