Sea Hunter Liveaboard, Costa Rica



  • Being a former commercial diving support boat, the Sea Hunter is superbly equipped for smooth sailing towards all types of dive sites.
  • Many kinds of dives on offer, ranging from vertical walls, drifts, pinnacles, as well as incredible marine life, including Hammerhead sharks, Sailfish, and Whale sharks.
  • The Sea Hunter also includes a variety of land trips to explore the stunning Costa Rican Forest

The MV Sea Hunter Liveaboard is a purpose built vessel offering year-round diving in Cocos Island. She is an incredibly stable and robust vessel and also has 'zero speed stabilisers' which are lowered into the water when she is moored to give added stability, making the M/V Sea Hunter an ideal choice for diving in Costa Rica. She has 8 standard cabins located on the lower deck with the choice of twin or double beds, which are air-conditioned, carpeted throughout and come with en-suite bathrooms. On the upper deck are 2 double suites with panoramic views, en-suite bathrooms, AC, carpet and each suite has hand-painted artwork by Carlos Hiller on the walls.

Social areas aboard the MV Sea Hunter include the lounge fitted with chairs, long, padded seating areas for sitting, DVDs, videos, games and more, as well as the mini-bar. The dining room has five, 4-person booths arranged in two rows, and is where the menu of a combination of American and local Costa Rican cuisine is served, including fresh tropical fruits, salads, fish, chicken, beef prepared in a variety of ways. There is also a study, which provides a relaxed atmosphere and extensive library, as well as a video and digital photography editing suite.

MV Sea Hunter itineraries in Costa Rica are 10 or 11-nights long giving divers the opportunity to really experience Cocos Island to its fullest. Due to the remote location of Cocos Island, the diving is pristine, marine life is abundant and divers can expect to see schooling white tip reef sharks, schooling hammerhead, dolphins, manta rays, sailfish and much more. Diver facilities have been well designed to ensure maximum comfort. Each diver is allocated individual gear storage and under-seat storage, as well as personal camera lockers and free Nitrox is included for certified divers.

Book your Sea Hunter liveaboard easily online today.

The Sea Hunter is following stringent safety protocols, detailed sanitation measures have been put into place and all crew and staff are required to provide a negative COVID-19 test before departure. Guest rooms are meticulously cleaned and disinfected daily with a triple-check system for cleaning and sanitation. Sea Hunter does require guests to produce a negative COVID test before boarding the ship.

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Included: VAT, Hotel Transfer, Alcoholic Beverages, Drinking Water, Soft drinks, Tea & Coffee, Full-Board Meal Plan (All meals), Snacks, Diving Package, Nitrox, Cabin Towels, Complimentary Toiletries, Deck Towels, Laundry / Pressing Services.

Required Extras: Fuel Surcharge (200 USD per trip), National Park Fees (450-870 USD per trip), Visas and Fees.

Optional Extras: Gratuities, Airport Transfer (30 USD per trip), Wine with Dinner, Nitrox Course (200 USD), Private Dive Guide, Rental 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

  • Laundry Service
  • Camera Station
  • Daily housekeeping
  • Audio & video entertainment
  • Air Conditioned saloon
  • Aircon Cabins
  • Sun Deck
  • Indoor Saloon
  • Warm Water Showers
  • Outdoor Dining
  • Custom built for diving
  • Charging stations
  • En-Suite bathrooms
  • Non-Smoking Rooms
  • Outside Showers
  • Seaview Cabins
  • Separate Rinse for u/w Camera
  • Dedicated Local & International Crew
  • Leisure Deck
  • BBQ Area
  • Available for Charter

Food & Drinks

  • Western Food
  • Vegetarian Options
  • Buffet style
  • Beer available
  • Snacks All Day
  • Vegan Options
  • Fine Wines Selection
  • Free Soft Drinks
  • Wine Available

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.


  • DIN Adaptors
  • Nitrox available
  • Tech diving
  • Rebreather Support
  • Rinse Hoses
  • Dive deck
  • Tenders for diving
  • Sidemount Diving
  • Shaded Diving Area
  • Free Nitrox

The crew speaks English and Spanish.

Gear Rental

There is diving gear available on this boat. Please provide your rental needs on the booking form. See below for further details on inclusions and pricing. Show prices.

Drawings & Vessel Layouts

Sea Hunter Liveaboard Deck Plan floorplan

Boat Specifications

  • Year built 1994
  • Length 115 ft
  • Beam 26 ft
  • Top speed 10 knots
  • Cruising speed 9.5 knots
  • Engines twin GM 16V92 / 1200 total hp
  • Max guests 20
  • Number of cabins 10
  • Number of bathrooms 10
  • Tenders Two 24 ft heavy duty fiberglass dive boats 17 ft rigid bottom inflatable

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
  • First Aid Kits
  • Satellite & mobile phones
  • Search light
  • Crew trained in first aid
  • Emergency flares

Sea Hunter Reviews

  • 9.2 Superb
  • 27 Verified Reviews
  1. Vessel
  2. Crew
  3. Food
  4. Diving
  5. Value
  • 9.6 Exceptional
  • Peter Anthony Z
  • United States United States
Great way to celebrate retirement

The experience of diving with some of most wonderful creatures of ocean - The new dive friends we made during this 10 day adventure - The many great memories we that will bring us back to the Sea Hunter and Cocos Inland

Recommended for
The fantastic crew - The diving - The knowledge and experience of the dive masters
  • 10 Exceptional
  • Tammy L
  • Singapore Singapore
Excellent crew, food, comfort

Hammerheads, Carlos, our Cruise Director, has the patience of a saint. He fixed my faulty equipment onboard the panga twice, immediately before the dives so I did not miss any dives. Deeply appreciated his cool, calm and humourous attitude.

Recommended for
Helpful staff, food variety, experienced guides
  • 9.2 Superb
  • Janos S
  • Hungary Hungary
The crew was very friendly and made you feel special for the whole week.

Encounters with sharks in every dive.

Recommended for
The professionalism of the crew, both the boat and dive crews. The quality of food offered from time to time. The helpfulness of the crew.
  • 9.6 Exceptional
  • Lena L
  • Norway Norway
Cocos - a dream destination repeated

This is my 2nd trip to Cocos seeing it was so mindblowing the first time. I was with a different operator last time, and in low season (apparently, but still incredible then as well). I must commend Seahunter for a really top notch operation, well laid out skiffs with room to move about, clean and extremely well kept boat and amazing food (healthy and varied). The lack of 1 star is due only due to rather japanese style hard matresses in some cabins...And I can normally sleep anywhere The crew also genuinly seemed to care we had a good time. Very friendly, engaged and interested. I will definitly return to this operator. Now the diving: hampered by really bad viz first part of the 8 days (This was a 10 day trip), but luckily it picked up. Rainy season really means RAINY, torrential rain throughout. No need for suntan lotion. Amazing big animal encounters, so if you like action diving with current, blue, and big game, this is for you. The island itself is also stunning, and just being so far away from the world, with Jurrasic park scenery, no mobil reception, letting it all hang out in tracky bottoms and watching the birds and the occasional thunderstorms...Well, lets say skip two trips to the Carribean and and save up to do this instead.It will blow your mind! As small end note: Its not easy diving though, so be prepared to be a bit bruised and battered. Very much worth the effort though, whalesharks, hammers a plenty, tigers, schools of trevally so big it must have been in the thousands...marbel rays falling on you from every angle...just magic!

Recommended for
Wildlife encounters, really well run and well kept boat, amazing fresh food!
  • 10 Exceptional
  • Meryl N
  • Switzerland Switzerland

Just diving there everyday in the blue with such a marine’s life and being in the middle of the ocean with no noise, no hurry... it made already 2018 awesome!

Recommended for
The dives, the beauty of the island and the kindness of the crew
  • 10 Exceptional
  • Paul B
  • France France
Best diving on the best boat

Seeing many hammerheads, Galapagos and white tip sharks. Also seeing a tiger shark and a silky shark. The boat was amazing and the crew was the best (Manuel, cruise director is outstanding). Food is best in class !!

Recommended for
Diving, food, crew
  • 8.4 Very good
  • Barry K
  • United States United States
Great experience!!

As above, the diving was wonderful. Saw numerous hammerheads both far and close. Saw one whale shark (up close). But in addition to this, the diving was wonderful. Would highly recommend this trip. Only thing that was not up to liveaboard standards was the food. It was acceptable, but not what we would hope for. Divemasters and boat drivers were superb.

Recommended for
Diving, Divng, Diving
  • 8.0 Very good
  • pavel P
  • Switzerland Switzerland
Great trip excellent crew.

Swimming with Dolphins. Watching tiger shark hunting turtle.

Recommended for
Possibility to see sharks and dolphins very close. Excellent crew. Good overall atmosphere
  • 9.2 Superb
  • Lisa M
  • Sweden Sweden
A must-do expedition for experienced divers

Fantastic, the crew really go out of their way to make their guests feel special and appreciated. It is extremely expensive, but considering how remote the location is and how comfortable the boat is, it's understandable. Only recommended for hard-core experienced divers as the crossing to Cocos is long and bumpy. I loved every minute of it and was especially surprised how beautiful the cabins are (hand-painted individually). The general comfort level was a lot higher than I had expected and if I could afford it I'd definitely go back again.

Recommended for
Diving, cabins, crew
  • 9.2 Superb
  • Frank K
  • Germany Germany
Cocosfeeling mit Wiederholungscharakter

Immer wieder sehr gut organisiertes professionelles Seahunterteam mit hochseetauglichem Boot, perfekter Mannschaft mit guter amerikanischer Küche! Bogenstirnhammerhaie konnten wir bei unserem Trip im Oktober 2017 satt aus der Nähe betrachten! in 2009 konnte ich diese Tiere noch zählen. In 2017 war dies nicht mehr möglich gewesen!!! Tigerhaie zudem auch hautnah erlebt. Ich habe nach Cocos, wo dann eine weitere Malpelloexpedition zeitnah folgte, als Taucher mit mehr als 1000TG in den Weltmeeren nun alles erlebt. Cocostrips mit der Seahunter -die zudem auch ein Stabilisierungssystem- hat und den Wellengang sehr erträglich macht, sind und bleiben für mich ein Highlight was das tauchen betrifft Nicht ganz billig aber für das was geboten wird, seinen Preis wert! mit freundlichen Flossenschlägen Taucher Frank :-)

Recommended for
Abenteuer faszinierendes Cocos allgemein, Schwarm von Bogenstirnhammerhaien, Tigerhaie,