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Okeanos Aggressor, Costa Rica

Rating 8.7 out of 10 8.7 Fabulous

“I thoroughly enjoyed the experience.”

Stephen B, Flag of United Kingdom United Kingdom

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.

Choose your departure date

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 per trip), National Park Fees (396-554 USD per 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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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
  • Nathan W
  • Flag of United States United States

Incredible experience only matched by the incredible staff on board.

Seeing the hammerheads up close, a whale shark and swimming with the dolphins. The vibe was super positive with the staff and other guests on the trip so not a bad way to spend 10 days stuck on a boat together.

Recommended for
Diving, staff friendliness and food
  • 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,
  • Rating 8.8 out of 10
  • 8.8 Fabulous
  • Stephen B
  • Flag of United Kingdom United Kingdom

Less hammerheads, great service

It was January so we didn’t see large schools of hammerheads but we did see plenty of them, and tigers and even mantas and silver tips. Food was excellent and the level of service on the boat and when diving was fantastic. All the staff were great. Dived a variety of sites. I thoroughly enjoyed the experience.

Recommended for
Food, staff and diving
  • Rating 9.2 out of 10
  • 9.2 Superb
  • Yann V
  • Flag of France France

Wonderful dives, awesome crew & dive guide, comfortable boat, what more could you ask for?

Diving in the blue with a school of hammerhead sharks, seeing a whale shark at the bend of a reef, excellent moments with the crew, very friendly, helpful, who will do everything to help you make this stay optimal.

Recommended for
Spectacular dives with schools of hammerhead sharks, whale sharks, fantastic crew & dive guide
Translated from French

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