Okeanos Aggressor II, Costa Rica

Name: Cocos Island Adventure (Puntarenas - Puntarenas)
Start: 2026-12-26
End: 2027-01-05
Location: Costa Rica

8.6 Fabulous

Nitrox available
En-Suite bathrooms
Aircon Cabins
Warm Water Showers

from $ 581 / 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.

Choose your departure date

Date

Itinerary

Price

Select

11 Jul

11 Days / 10 Nights

$ 6,399

FULL

29 Jul

9 Days / 8 Nights

$ 5,399

FULL

09 Aug

11 Days / 10 Nights

$ 6,399

FULL

26 Aug

9 Days / 8 Nights

Female Shared Cabin.

$ 5,399

Select Cabin only 1 space left

05 Sep

11 Days / 10 Nights

$ 6,399

FULL

23 Sep

9 Days / 8 Nights

$ 5,399

FULL

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

Select Cabin only 4 spaces left

20 Jan

11 Days / 10 Nights

$ 6,549

FULL

16 Feb

11 Days / 10 Nights

$ 6,549

FULL

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 USD), Fuel Surcharge (140-180 USD per trip), National Park Fees (350-630 USD), Port Fees.

Optional Extras: Dive Insurance, 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.

Pay by bank transfer or online with

Best Price Guaranteed

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

8.6 Fabulous

Vessel

7.4
Crew

9.4
Food

9.5
Diving

9.0
Value

7.8

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

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

9.2 Superb
Guillaume L
France

PuraVida in this JurassicPark like environment
What a special island, and a special feeling to be lucky enough to have been there. Crew was amazing, dives were warm and with good viz, many hammer heads around, eagle and marble rays, dolphins etc... although the best season apparently ranges from August to October, with colder waters and loads of sharks. PuraVida !
Recommended for
HammerHeads. Crew. PuraVida.
29 Apr, 2025

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

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

9.2 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

9.2 Superb
Sandra H
Austria

Diving was amazing the dive guides too also the every other crew member too. Kind, helpfull, thinkfull.
Diving for sure :-)
Recommended for
Diving Crew View
23 Feb, 2023

10 Exceptional
Michael J
United States

Great option for cocos!
The crew was very friendly and accommodating, food was excellent. Dives were safe and enjoyable. This is a great option to see cocos and more budget friendly than the alternatives.
Recommended for
Saw tons of hammerheads, a whale shark, and enjoyed the underwater life in the pacific.
27 Jul, 2021

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

8.4 Very good
Eric S
Canada

So many sharks
The diving was great so many shark encounters on every dive. Schools of White tips and hammerheads. Galapagos Sharks galore. The food was amazing, th staff attentive. A shout out to Captain Carlos and to Edwardo.
Recommended for
Food, sharks, staff
27 Jan, 2018

65 reviews

8.6 Fabulous
65 Verified Reviews

Sort reviews by:

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
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

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

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

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

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

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

9.2 Superb
Corinne K
France

An unforgettable trip
The dives were diversified but their quality consistent and most of them were as fun as they were extraordinary. My cabin (the Master cabin) was just perfect and I loved the exquisite attentions on some evenings (chocolate on the pillow etc). But I found the sandard cabins really very small, especially considering the price (that's the reason of the 4 stars "only"). I would like to point out the professionalism, efficiency and friendliness of all crew members, from the cleaning man to the captain. They are all précieuse and really made this trip all the more enjoyable and all the more difficult to leave at the end. The food was also absolutely fantastic and the chefs accomodated me with delicious dishes accordingly to my vegetarian diet. Even though the boat is obviously not brand new, I found it beautiful and well maintained and enjoyed every moment on what felt like a floating home away from home. If the trip was not so expensive (one of the only flaws I can se), I would definitely do it again next year, and maybe the next, and over and over again.
Recommended for
The beauty and remoteness of dive sites and of the Island, the crew, the food
26 Aug, 2015

9.6 Exceptional
Francois D
France

Spectacular dives
The 36-hour sailing is well worth it. Extraordinary dives especially on the dirty rock site with a spectacular school of jack fish, and an unforgettable school of hammerhead sharks.
Recommended for
Quality of the dives. Atmosphere. Schools of hammerhead sharks.
02 Sep, 2025

8.4 Very good
Alazne C
Spain

Hammerheads on a paradise island
Diving was very good quality, in most of them we went out to the blue in search for schools of hammerheads. We had many close-up encounters too in cleaning stations. Galapagos sharks, dolphins, reef sharks, marble rays and eagle rays also appeared. The crew is super friendly and they will do their best to repeat the best dive sites as many times as possible, food is excellent. The only drawback of this boat is that the cabins were way too cold and there was no way to control the aircon individually, it was conected for all the cabins due to the engine located downstairs. For this reason I barely used my cabin.
Recommended for
Hammerheads and dolphins. Friendly crew. Divesites repeating oportunity.
02 Sep, 2025

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

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

8.8 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

10 Exceptional
Ivo J
Czech Republic

my best diving trip
7 kinds of sharks
Recommended for
Diving with sharks. excelent food beer and wine for free. nice group of divers from around the world.
14 Apr, 2025

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

6.8 Review score
Mingyu W
United States

tough dives and room for improvement of dive guides
Saw Manta, Sharks, Turtles and tons of fish, Moray. Made some friends over the trip. Boat is very on schedule. Some improvements can be made. 1. Diveguides can pass on more knowledge of the marine life around the dive spots. 2. Some more helps from the boat might be useful, like ear beer, sunscreen, fish id card, very minor, but can be useful for travelers.
Recommended for
friendly crew, nice food, nice buddies
10 May, 2018

8.8 Fabulous
Takashi D
Japan

Awesome exparience!
I could see hummer head shark in "All dive".
Recommended for
Hummer head sharks, huge school of jacks, whale sharks
28 Aug, 2019

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
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

7.6 Good
Werner M
Germany

A great adventure
The crossing was very pleasant due to the weak sea. Divespots met expectations. A lot of hammerhead and Galapagos sharks, manta rays.
Recommended for
The helpfulness and friendliness of the crew. Diving equipment remains mounted in the dinghy, briefing, description of the dive sites. The food offer.
09 Dec, 2025