Okeanos Aggressor II, Costa Rica

Name: Cocos Island Adventure (Puntarenas - Puntarenas)
Start: 2027-05-25
End: 2027-06-04
Location: Costa Rica

8.4 Very good

Nitrox available
En-Suite bathrooms
Aircon Cabins
Warm Water Showers

from $ 504 / day Check dates

Island Exploration - Okeanos Aggressor II

En-Suite bathrooms - Okeanos Aggressor II

“The chefs and the food were amazing, no doubt I gained a few kilos on my vacation :). ”
Camryn S, United States

Highlights

Year-round diving to Cocos Island
Dive one of the most exhilarating dive destinations in the world in comfort and luxury
Regular sightings of schooling hammerheads, countless white-tip sharks, manta rays, tuna, and whale sharks

The Okeanos Aggressor II liveaboard was built for comfort and stability to offer year-round diving at the remote islands of Costa Rica. The yacht provides comfortable accommodation for 24 guests in 12 en-suite cabins. Eight deluxe staterooms are located on the lower deck, and there is a double lower bed and twin upper bunk-style bed. On the main deck is the master stateroom with a queen bed, and on the upper deck are two suites that have either two twin beds or one king bed.

On the main deck is the ship's restaurant, where delicious cuisine with a varied and plentiful menu is served. Breakfast and lunches are buffet-style, and dinner is chef-prepared and served each evening. On the top deck is the BBQ and shaded cocktail bar, perfect for unwinding with fellow guests to discuss the spectacular diving of the day. Here, you can also find comfortable loungers to do some tanning in between dives.

The Okeanos II liveaboard departs from Puntarenas, Costa Rica for the 36-hour crossing to Costa Rica. Guests can enjoy up to 21 dives at the UNESCO World Heritage site for the chance of big fish encounters like nowhere else. Aside from the incredible diving, guests will also be taken ashore to hike through the jungles of Cocos and swim in the many waterfalls.

Book online today to reserve your space aboard the Okeanos Aggressor II liveaboard.

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Date

Itinerary

Price

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22 Oct

11 Days / 10 Nights

$ 6,399

FULL

14 Nov

11 Days / 10 Nights

$ 6,399

FULL

04 Dec

11 Days / 10 Nights

$ 6,399

FULL

26 Dec

11 Days / 10 Nights

$ 6,399

FULL

20 Jan

11 Days / 10 Nights

$ 5,549

FULL

16 Feb

11 Days / 10 Nights

$ 6,549

FULL

10 Mar

11 Days / 10 Nights

$ 6,549

FULL

03 Apr

11 Days / 10 Nights

$1000 OFF! Rates include discounts. Valid until September 15, 2026.

$ 6,549 Deal %

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01 May

11 Days / 10 Nights

$ 6,549

FULL

25 May

11 Days / 10 Nights

$ 6,549

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14 Jun

11 Days / 10 Nights

$ 6,549

FULL

26 Jun

9 Days / 8 Nights

$ 5,549

Select Cabin only 4 spaces left

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: Chamber Fees ($30), Fuel Surcharge ($140-180 / trip), National Park Fees ($350-630).

Optional Extras: Gratuities, Airport Transfer, Extra Dives, Nitrox ($80-150 / trip), Nitrox Course ($80-250 / trip), Rental Gear, Scuba Diving Courses ($150-250 / trip), 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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Boat features

En-Suite bathrooms
Aircon Cabins
Warm Water Showers
Air Conditioned saloon
Sun Deck
Camera Station
Non-Smoking Rooms
Camera room
Custom built for diving
Charging stations
Indoor Saloon
Audio & video entertainment
TV in cabins
BBQ Area
Available for Charter
Snorkeling Equipment
Separate Rinse for u/w Camera
Outside Showers
Leisure Deck
Bar

Food & Drinks

Free Wine w/Dinner
Fine Cuisine
Free Soft Drinks
Beer available
Full-board Option
Buffet style
Western Food
Local Food

If you have any specific dietary requirements whilst on-board your cruise, you can add this to your special requests on step 2 of the booking form. We advise limiting these requests to religious beliefs or food allergies.

Diving

Nitrox available
Shaded Diving Area
Sidemount diving – Single Tank Only
Rinse Hoses
Dive deck
Tenders for diving

Languages Spoken

The crew speaks English.

Gear Rental

Equipment is available for rent on this boat. Please provide your rental needs on the booking form. If the rental gear is not included in the price, you will need to pay for it on board the boat. Show prices

Drawings & Vessel Layouts

Cabin Types

Boat Specifications

Length: 120 feet

Beam: 27 feet

Max guests: 22

Number of cabins: 11

Number of bathrooms: 12

Boat navigation and safety

Radar
Depth Sounder
GPS
Radio VHF/DSC/SSB
E.P.I.R.B. Distress System
Emergency Rafts
Life Vests
Fire Alarm & Fire Extinguishers
Oxygen
First Aid Kits
Satellite & mobile phones
Bilge pump alarm
Search light
Crew trained in first aid
Emergency flares

Okeanos Aggressor II Reviews

8.4 Very good

Vessel

7.2
Crew

9.2
Food

9.4
Diving

8.8
Value

7.5

10 Exceptional
Alejandro N
Argentina

The best life on board of my life
Amazing dives: Hammerheads, tigers and Galapagos everywhere. The crew is aware of the passengers at all times. The best Dive masters. Thanks a lot.Pura Vida!
Recommended for
Dive sites. Dive Masters and boat staff. Food.
14 Nov, 2019

Translated from Spanish

8.0 Very good
Daniel H
Switzerland

A beautiful diving cruise
The dives are very beautiful with lots of hammerhead sharks, galapagos sharks, silky sharks etc.
Recommended for
The food on board is excellent. The dive sites are beautiful and varied. The overall atmosphere was very friendly.
22 Mar, 2026

Translated from French

9.6 Exceptional
Patrick M
Ireland

Fantastic trip. Highly recommended.
Going in April you get benefit of better conditions, warmer water, calmer crossing and less current. This comes with the trade off of less big groups of pelagics. That said we had plenty of great encounters with hammerheads, galapogas, silky, black tips, dolphins, eagles and Mantas. They were almost all lovely doves. The team was excellent, in particular Luis and Facundo as dive guides, Esteban and Gerardo as the chefs and Giancarlo on hospitality. I’ve been on 6 liveaboarda and the food was the best I’ve had, incredibly sushi nights, steak and many more. The boat is older but incredibly solid. Most of the negative reviews I’ve read were on the boat, yes the cabins are a bit ‘cozy’ but I knew this going into and didn’t mind. Overall the boat is in great structural condition, everything works very well it just has slightly dated decor and smaller cabins.
Recommended for
Diving. Crew. Food.
02 May, 2026

9.6 Exceptional
LILING Y
China

Although it's far by boat, it's worth going
See a lot of sharks and experience great boat service
Recommended for
1. See a lot of hammerhead sharks 2. Land travel is great The service on board is very good
14 Oct, 2019

9.2 Superb
Alexander S
Austria

awesome and unforgettable dives - big THX!
big thx to carlos & crew! best was the relaxed and flexible and friendly crew & nice boat!
Recommended for
tauchen, tauchen tauchen und die super crew / staff!
13 Sep, 2018

9.2 Superb
Mary S
United States

Enchanting island teeming with under the sea life...amazing!
Seeing a Manta Ray, hammerheads, marble rays, spotted eagle rays, a Galapagos shark and the whale shark on Easter morning first dive of the day with dolphins playing in the water when we boarded the panga. Yes, all of this on one dive...spectacular!
Recommended for
Okeanos II crew, diving with lots of sea life, Cocos Island
09 May, 2019

8.8 Fabulous
ERIC M
France

Fabulous dive sites on which a very competent and supportive team will accompany you.
Every day is a pleasant day.
Recommended for
Crew / meals / organization
11 Jan, 2022

Translated from French

9.2 Superb
Jesus S
Spain

Perfect sport for shark lovers
Cocos Island is a fantastic option for shark lovers due to the variety you can find at each dive. It is a long trip from Costa Rica but completely worth it. The crew did a great job to make sure we all felt comfortable. Special mention to the chef and his assistant, who amazed us every day with fantastic dinners.
Recommended for
Dive sites, marine faura, food onboard
20 Sep, 2016

9.2 Superb
Christine S
Austria

It was indescribably great
I don't know where to start. It was everything, super, super, super. The team is incredible, so great. I would like to thank you very much for the wonderful days and diving areas. It was just super great. Thank you
Recommended for
The crew, food and dive sites
15 Nov, 2022

Translated from German

8.0 Very good
Michelle W
United States

Great diving cabins small
Diving with my 18 year old son. People on board were great. Cocos island is incredibly beautiful
Recommended for
Diving Safe Cocos Island
02 Apr, 2019

71 reviews

8.4 Very good
71 Verified Reviews

Sort reviews by:

9.6 Exceptional
Kayla W
Canada

Once in a lifetime experience
Really unforgettable trip, the crew was outstanding, Coco's island is so special, and the diving was just amazing. The water temp in April was around 29/30 degress celcius, so lovely!
Recommended for
The amazing diving. The crew was so helpful. The island of Coco's is so special.
02 May, 2026

9.6 Exceptional
Gary F
United States

As good as indonesia on some dive sites
some sites had several schools of different kinds of fish, as well as sharks and turtles, all in one dive. I like to watch schools of fish. I have been to Indonesia on many dive vacations and Cano Island is as good as Indonesia for schooling fish on some dive sites.
Recommended for
evening meals were gourmet, staff provided good services, diving from the pangas was easy
24 Jan, 2017

9.2 Superb
Camryn S
United States

10/10 would go again
This was a fanstic trip to spend time with my brother and meet new friends. The diving was superb, never a dull dive day. The crew were always willing to help and were very friendly. The chefs and the food were amazing, no doubt I gained a few kilos on my vacation :). Even though some days the weather was not ideal, the crew and the dive guides did their best to still offer the best experience in and out of the water.
Recommended for
The chef and the food were fantastic! Also very good on accommodating dietary preferences. the diving and the dive guides/penga captains were great! Always ready to help and provide the best service. the crew and other costa rican guests were very hospitable to us and made us feel welcome in their country..
19 Jun, 2025

7.2 Good
Jillian Z
United States

Fantastic trip and experience
We had amazing dives in Cocos with a great group and friendly staff. We saw lots and lots of hammerheads up close and personal. Excursions on land were fun. Food was plentiful and had a nice variety of options. Ride out was 41 hours and rough, but our ride back was 36 hours, smooth and sunny. Overall was a fantastic trip and experience. Cocos is truly a special place.
Recommended for
The diving in Cocos. The group, both divers and staff. The Masterstateroom.
10 Jul, 2024

7.2 Good
Stephanie H
United States

Excellent crew, guides, and dive operation made for a fun and memorable Cocos experience despite an aging boat, small shared cabins, and El Niño-affected marine life.
The crew was wonderful and worked incredibly hard to make the trip enjoyable. The dive guides were excellent, and the service was outstanding. Before each dive, our tanks were swapped, BCDs were set up, and everything was ready to go—we simply had to hop into the Zodiac, do a quick gear check, and start diving. The dives themselves were a lot of fun, with deep profiles, negative entries, and, of course, the opportunity to see the famed hammerheads. The boat was older than I expected, and the shared cabins were quite small and could have been cleaner. We also experienced some issues with the AC leaking. The food was decent overall, and the sushi celebration prepared by the chef mid-trip was a particularly nice touch. Conditions and marine life were affected by El Niño during our trip, but the guides did a great job of keeping the experience positive and making the most of what we encountered. Overall, the crew, dive operation, and service were the highlights of the trip. PS: One unexpectedly wonderful perk was the consistent high-speed internet (40 USD for 8GB, if I recall) on the 36-hour crossing that enabled me to work the whole way over and back - it saved me a few days of PTO!
Recommended for
Great service from the staff re: diving gear/setup. Fun, stimulating dives around a beautiful island. Consistent internet on the crossings so I could even work to save PTO days..
11 Aug, 2026

9.2 Superb
David T
Canada

Had a great time and met great people
The small trips to the island were cool. The Diving was amazing.
Recommended for
The diving, the staff and the food
28 May, 2019

8.4 Very good
Frank T
Germany

Varied with very nice staff and well-organized diving trips
Dive sites Small 2 Amigos
Recommended for
Service of the crew. Selection of breeding places according to the weather conditions. Kitchen, catering.
21 Mar, 2026

8.8 Fabulous
Simon V
Belgium

Amazing dives
Dive with schools of hundreds of hammerhead sharks
Recommended for
The crew, the dives, the trips to Cocos Island
11 Jan, 2022

8.4 Very good
Suzanne Z
United States

Big animal life not as abundant as expected/anticipated
Overall, boat, food and crew were great. White tip sharks abundant, other shark life averaged 1 or 2 per dive, with Galapagos, black tip, hammerhead and tiger sharks. Limited sites around Cocos. Crossings were better than expected. Water was very warm, 3mm wetsuit fine, but probably why the bigger life was limited, El Niño conditions?
Recommended for
Crew, comfortable Owners cabin, easy diving
03 Jan, 2016

9.2 Superb
Mario H
Germany

It was a great diving trip
The many hammerhead sharks, the food on board, the team of the Okeanos 2
Recommended for
The hammerhead sharks, the large schools of fish and of course the team of the Okeanos 2
23 Feb, 2023

8.4 Very good
Fabian S
Germany

Wahnsinnstauchplätze und riesige Galapagoshaie
The absolut highlihts of this trip were the schools of hummerheads, the very closed big fat galapagos sharks and fantastic guests. The hospitality of the crew was amazing. The best liveaboard food we ever had on a liveaboard! Additional a very good organisation. Coco`s is not the cheapest place to dive but one of the best of value for money! I strongly recommend it!.
Recommended for
the galapagossharks, the guests and the crew
27 Mar, 2017

8.8 Fabulous
Efrain I
Panama

Nature is still the best adventure.
Tiger Sharks!!!
Recommended for
Crew's disposition. Food. Diving.
04 Apr, 2022

6.0 Review score
Sophie B
United Kingdom

You're there for the diving, not the vessel
Thoroughly enjoyed this once in a lifetime experience to Cocos but feel the provider is sitting on a monopoly of being on of the few boats that can go to Cocos Island; the most expensive liveaboard I've been on and one of the lowest quality in terms of boat and service
Recommended for
One of the sharkiest places on earth. Walls of hammerheads, despite El Niño. Varied pelagic life.
19 Aug, 2026

10 Exceptional
Ruth P
United Kingdom

Great diving. Great food. Brilliant adventure
Diving was brilliant. Cocos Island is cool, so many waterfalls. The diving was really well organised, the staff on the boat worked really hard. We were worried about the food, as my husband has Coeliacs, but the attention to detail on this was superb, they brought out gluten free options whenever required. Also the staff at Liveaboard.com were great, they jumped straight onto a mix up with my booking, it was really easy to get hold of them on the phone, and the mix up was sorted straight away.
Recommended for
Very relaxed atmosphere. Catered brilliantly for gluten free. Well organised.
01 Sep, 2025

8.4 Very good
Francois L
France

Magnificent cruise
The dives in the blue with the hammerheads and the encounter with the dolphins.
Recommended for
The absolute feeling of change of scenery, the high number of sharks, the professionalism of the crew, especially that of the guides.
17 Mar, 2018

9.2 Superb
Jörg W
Switzerland

Once in a lifetime experience - just amazingly wonderful COCOS ISLAND !
Best diving with hundreds of hammerhead sharks, groups of Galapagos sharks, many white tips, some black tips, eagle and marble rays and an unlimited number of tropical fish. Many different dive sites, some with quite a bit of current. The climb of Cerro Iglesias was also a highlight of my trip to Cocos Island. Okeanos Aggressor II boat was very convenient, great food and an incredibly nice crew.
Recommended for
1. Safety first / 2. Wonderful crew / 3. Great dive sites
07 Aug, 2022

10 Exceptional
Nasira (Nancy) G
France

The dives were beautiful. The staff was discreet, efficient, professional and very pleasant, we had an unforgettable cruise stay. Thank you Manuel, Favien, Lewis, Hannibal, Carlos, without or
The best moments are the dives in Alycion with the encounter with the herd of hammerhead sharks, Galapagos sharks. Magnificent dives.!!!!!
Recommended for
Dives - meals - comfort of the boat.
25 Oct, 2023

8.4 Very good
Florian M
Switzerland

Unique underwater world
Great tour, unique diving, capable and friendly crew, varied food.Lower deck cabins rather small for 2 adults...... definitely no deluxe(Wide-angle photo in the description.....)But you are there for diving!Old but well-maintained seaworthy ship.
Recommended for
Pisces. Essen. Seaworthiness of the ship.
04 May, 2026

10 Exceptional
Cita M
Slovenia

First but not the last liveaboarad trip
Hammerheads, Galapagos sharks, good diving team, dynamic driving with Pangas, full service.
Recommended for
Sharks, the crew and the expedition to Cocos Island
21 Jan, 2018

9.6 Exceptional
David D
United States

Truly a once in a lifetime experience.
Unbelievable diving with bunches of sharks at every site. Because we were at the end of the dry season there was little rain and calm seas making for a pleasant crossing and opportunities to visit the island. Can't say enough about the crew, they are dedicated to making your experience an enjoyable one.
Recommended for
The diving, the food, and a great crew.
28 May, 2019