Okeanos Aggressor II, Costa Rica

Name: Cocos Island Adventure (Puntarenas - Puntarenas)
Start: 2027-06-26
End: 2027-07-04
Location: Costa Rica

8.4 Very good

Nitrox available
En-Suite bathrooms
Aircon Cabins
Warm Water Showers

from $ 458 / 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

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04 Dec

11 Days / 10 Nights

$ 6,399

FULL

26 Dec

11 Days / 10 Nights

$ 6,399

FULL

20 Jan

11 Days / 10 Nights

$ 6,549

Select Cabin only 2 spaces left

16 Feb

11 Days / 10 Nights

$ 6,549

FULL

10 Mar

11 Days / 10 Nights

$ 6,549

FULL

03 Apr

11 Days / 10 Nights

$1500 OFF! Rates include discounts. Valid until November 09, 2026.

$ 5,049 Deal %

Select Cabin available

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

Last space for men only.

$ 5,549

Select Cabin only 1 space left

12 Jul

11 Days / 10 Nights

$ 6,549

FULL

26 Jul

9 Days / 8 Nights

$ 5,549

Select Cabin available

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 ($250-354 / 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

9.5
Diving

8.8
Value

7.5

9.6 Exceptional
Bryan D
United States

The trip was awesome and highly recommended for anyone seeking great adventure!!!!
The trip was amazing. The crew is outstanding and everything is always prepared, and there are never any issues or excuses. The food is over the top and the presentation is 5 star for liveaboard life. They are very professional. One of our dives was one of the best in my life with hundreds of hammerheads and a Whaleshark. We also encountered about 40 marble rays in a mating frenzy which was fascinating. Overall great experience.
Recommended for
The personnel on board were outstanding.. The food was the best I have ever had on a liveaboard.. The operation ran flawlessly and there were never any issues..
07 Sep, 2026

10 Exceptional
Jazz B
Canada

Happiest birthday dive trip
I was celebrating my birthday and had the best time. The crew was very attentive. Tye dives were amazing especially on my birthday we were lucky to see a whale shark.
Recommended for
Cocos Island. Food. Crew.
07 Sep, 2026

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

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

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
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

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

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

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

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

74 reviews

8.4 Very good
74 Verified Reviews

Sort reviews by:

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

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

9.6 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

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

8.0 Very good
Sebastien F
France

Wonderful liveboard experience in Cocos Island!
Saw many sharks: many Hammerheads, Galapagos, Tiger (one encounter in particular was just amazing!), Silk, Silvertip, counteless number of white tips. Saw mobula, eagle and marble rays. We also spotted dolphins on the surface. Big school of jack fishs and seabass. The reef life is also rich.
Recommended for
Adventure in a remote and pristine area. Magnificient marine life. Crew very professional
07 Dec, 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

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

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

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

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
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
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
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

8.4 Very good
Randal P
United States

Great trip but we didn't get to dive enough.
Cocos is a world-class dive destination that is remote enough to still be well-preserved and not over-dived. The crew was fantastic, they were all very attentive to the guests at all times. The food was fantastic. The boat is comfortable but shows a little wear. My only complaint is that we only got 3 dives per day, or 21 over 7 full diving days. The website says to expect 3-4 per day (no night dives) or 23 total. There is a big time and money investment getting there, it would be nice to dive as much as possible, that's what we're there for. There was one diver in our group who had been on this same trip 2 months earlier and they had 23 dives, but we were told this is not allowed. With only 3 dives a day there is a lot of down time and not much else to do, so it would have been nice to max out the diving. I have been on 2 other Aggressor boats where we did 5 dives per day for 5.5 days, or 27 dives total - so more diving in less time and for much less expense. Something to consider... The diving itself was amazing about half the time, and so-so the other half due to some reduced visibility when storms churned up the water or just due to luck. There were lots of white-tips and many hammerheads, enormous schools of jacks and other fish, rays of all types, huge tuna, and coral in good condition. We saw one whale shark. Some in the group saw mantas and galapagos sharks; the tiger shark(s), if present, were elusive. Overall, I really liked everything about this trip and would highly recommend it, but they should have 4 dives per day instead of just 3.
Recommended for
1. The diving. 2. The crew / service. 3. The food.
28 May, 2019

8.0 Very good
Nora I
Spain

Great diving with sharks.
Many sharks and rays, as well as abundant smaller life. Diving is worth the 1.5 day it takes to get there. The crew is very friendly and helpful at all times. Visibility around 12 meters, so not great. We went three times to the island. It’s beautiful and very virgin. Nitrox and National park fees are not included (to be payed in the boat) even though they are required to dive there. Nitrox is $150 and Coco Island park fee $600 as of Feb 2022.
Recommended for
Marine life, friendliness of the crew and food.
11 Mar, 2022

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
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

9.2 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

8.0 Very good
vincent B
France

A dive site that deserves its place in the world top
An overall positive experience thanks to an exceptional dive site and a quality service especially in terms of catering. I was able to observe all the marine fauna I had come to see: hammerhead sharks, Galpagos and Silver tips sharks, whale sharks and manta rays. Lots of beautiful memories thanks to a group of divers and a friendly team. The few negative points are related to the comfort on the boat: very rudimentary outdoor spaces, a slightly old boat and too much air conditioning in the cabins that it is impossible to adjust individually.
Recommended for
Quality of the dive site. Quality of the service on board. Quality of the dive guides.
08 Sep, 2026

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