Okeanos Aggressor II, Costa Rica

Name: Cocos Island Adventure (Puntarenas - Puntarenas)
Start: 2027-07-12
End: 2027-07-22
Location: Costa Rica

8.4 Very good

Nitrox available
En-Suite bathrooms
Aircon Cabins
Warm Water Showers

from $ 459 / 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

04 Dec

11 Days / 10 Nights

$ 6,399

FULL

26 Dec

11 Days / 10 Nights

Last space for women only.

$ 6,399

Select Cabin only 1 space left

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 December 04, 2026.

$ 5,049 Deal %

Select Cabin available

01 May

11 Days / 10 Nights

$ 6,549

FULL

25 May

11 Days / 10 Nights

$ 6,549

Select Cabin available

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 only 5 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 ($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.

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

8.4 Very good

Vessel

7.2
Crew

9.2
Food

9.5
Diving

8.8
Value

7.5

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

9.2 Superb
JULIAN G
Colombia

A journey through time and space
The trip to Cocos Island in Costa Rica aboard the Okeanos Aggressor II was unforgettable. With a friendly, helpful and knowledgeable crew of the operation, we were able to visit this magical destination that transports one in time and space. On the trip we shared with people from several countries around the world in a very pleasant atmosphere, being able to visit fantastic diving spots where we saw multiple species of pelagic animals from the Pacific Ocean.
Recommended for
The chosen destination, the crew and the food
28 May, 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

9.2 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
Annamaria B
United Kingdom

Amazing!!!
The highlight of the trip must have been being face to face to a tiger shark right away on check dive...and it only went up from there!
Recommended for
Pristine Nature Shark Diving, Great Food and Fantastic Crew!
24 May, 2016

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
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

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

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

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

74 reviews

8.4 Very good
74 Verified Reviews

Sort reviews by:

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

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
Efrain I
Panama

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

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
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

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

9.6 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

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

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

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

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

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

8.8 Fabulous
Lena L
Norway

One of those bucketlist destinations...Has to be done at least once!
Diving against the classic 'wall of hammerheads' on Dirty Rock and getting up close with my first two tiger sharks. Everything is also super sized here, the sharks, the enormous (!) schools of fish, the multiple rays (we had two surprise mantas our week). Note that the boats travelling to Cocos are more simple than most of the luxury liveaboards you get in e.g. the Red Sea and Maldives, but hey, you have everything you need and who cares when diving this great!
Recommended for
Tiger sharks, hammerhead sharks, galapagos sharks!
13 Jan, 2017

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

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

8.0 Very good
Klaus-Peter M
Germany

An unforgettable experience
Tigersharks, Whale Shark, Dolphins, Stunning Nature Above & Underwater, Coco Island, WaterfallBarbecue
Recommended for
Diving, Dining, Suite11
03 Apr, 2019

Translated from German

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

9.6 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

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

7.6 Good
Josh G
Puerto Rico

It was an amazing adventure to the Coco's islands
It was a great trip overall. The diving was great and we saw almost all there is to see in the Cocos besides whale sharks and tiger sharks but plenty of other stuff. The rooms could use some new sheets and pillows to make it a bit more comfortable, and quite small but they did the job. If I had to share with someone that I didn't know, probably would have been much more of an issue. However, they were nice enough. The shower in the room never got hot and the soap dispenser didn't work but there are amazing showers out back for after the diving that were hot and a perfect end to every dive. The coolest part of the boat for sure. I expected a bit more for the cost but it was overall an excellent adventure. The food was excellent but the fact there is no alcohol on board is quite disappointing since the cost is so expensive and that is why that is a 4. The diving was superb. Not as good as other places I have been but still top of the game and we all had a blast diving. Agressor Galapagos was a far superior trip in all ways if I must say. Except the cold water! The water in the Cocos was amazing. 72-87 degrees. 2/3mm suit is perfect. I went in February.
Recommended for
Sharks, Food, and outdoor shower!
24 Feb, 2023