She is 115 feet of flexible capacity and convenience, a dedicated dive cruiser specifically designed and built for long-range expeditions to destinations like Cocos and Malpelo islands. This spacious boat is everything that a serious diver or photographer could wish for – individual gear storage, private camera/strobe storage shelves with 110 & 220-volt AC power, stabilizers and even a private washer & dryer for client’s towels and bathing suits. Her roominess and user-friendliness have introduced adventure divers, as well as professional photographers and cinematographers, to an entirely new level of the liveaboard facility.


All cabins include personal hanging lockers, shelves, drawers and hanging hooks, and a private bathroom equipped with 110-volt outlets suitable for your electronic equipment. they are individually air-conditioned and carpeted throughout with a circular porthole. Cabins 1 through 8 are located on the ship’s lowest deck. Cabins 9 and 10 are located on the upper deck.

Cabins 1, 2 and 3 are twin cabins with two twin size beds. Cabin 3 is bunk bed style.

Cabin 4 is a double cabin, with one queen size bed and optional upper twin-size bed.

Cabins 5 and 6 are twin cabins, with two twin size beds. Cabin 6 is bunk bed style.

Cabins 7 and 8 are double cabins, with one queen size bed and an optional upper twin size bed.

Cabin 9 is a double suite with one queen size bed. This cabin includes: Shelves, drawers and hanging hooks, a desk and chair and a luxury bathroom with granite surfaces. It is equipped with 110-volt outlets suitable for your electronic equipment. The room has large windows, is carpeted throughout, contains a satellite telephone for international calls, a satellite connection to send and receive e-mails and a flat screen TV with DVD player. Each suite on Sea Hunter has a distinctly themed room, with hand-painted artwork by Carlos Hiller. Suite 9 has a Spotted Eagle Ray theme.

Cabin 10 is the Owner’s Suite, a double cabin with one queen size bed. This cabin includes all the comforts of cabin 9, and features hand painted artwork by Carlos Hiller of schools of jacks and dolphins. Note, the cost of the suites, Cabins 9 and 10 are higher than the lower deck cabins.


The bow section of the Sea Hunter offers a spacious area for passengers to stroll and feel the ocean breezes while taking in the beautiful vistas of sunsets, approaching islands or dolphins surfing the boat’s bow wake. The Sea Hunter’s Sun Deck is a 1000 square foot area is truly multi-use. Make yourself at home reading in a lounge chair, catching some rays or watching a sunset. Our chefs use this area for sumptuous BBQs with dancing under the stars. Its large open area has actually been designed specifically for landing a helicopter during special expeditions. The lounge is ample and comfortable with chairs and long, padded seating areas for sitting, reclining and even dozing off. Aside from the always fascinating socializing with your fellow adventurers, there is also a variety of nightly entertainment available aboard. This includes slideshows, DVDs, videos, games and more. Please feel free to bring along your own favorites. The refrigerator is constantly refreshed and brimming with soft drinks, beer and ice for your pleasure and something to munch on are always within reach.


The dining room consists of five, 4-person booths arranged in two rows, cozy enough even to allow conversation between booths. The menu aboard is a soulful combination of American and local Costa Rican cuisine. Meals are varied, abundant and nutritionally well-balanced. There are fresh tropical fruits, salads, fish, chicken, beef, and much more, all prepared in a wide variety of ways. Special dietary request and needs are welcome, and the staff will do their best to accommodate.


The Sea Hunter has ample camera storage space as well as dive gear storage.

Provided aboard are 20 personal camera lockers. There are numerous 110 & 220 volt outlets for charging batteries, strobes and other electronics. These are located in all of the personal camera lockers and also above the camera bench. Diver facilities are extremely well-designed with segregated, individual gear storage provided for each diver.

An extended dive platform serves as a swim deck or a launching platform for kayaks. At night, it’s a popular gathering place for viewing large fish, including shark activity spurred by the lights.

Diving is done from two 24 foot heavy duty fiberglass dive boats, and one 17 foot rigid bottom inflatable tender.

80 cu.ft. Aluminum tanks are available for use, as well as 100 cu.ft. Steel tanks, although advanced reservations are required for steel tanks. Rebreathers are supported on the Argo; they can supply you with tanks, scrubber material and any further assistance you need, and can provide you with the costs of these items. However, rebreathers are not available for rent.

Most of the action is at 60-90 feet /18-27 meters, and most dives are between 60-130 feet/18-40 meters. The safety limit is set at 130 feet / 40 meters and a dive computer is necessary.Visibility averages 60-100ft/18-30m. You will be diving in water about 78-83°F (26 – 29°C), although it can be a few degrees lower under the occasional thermocline. Please note: Malpelo can have significantly cooler temperatures. Weights and air or Nitrox filled tanks are supplied. Note that tanks are standard yoke (INT), not DIN. Be sure to notify us in advance if you need an adaptor. There is ample storage space for your diving equipment, including your own personal locker. For topside, it is recommended to wear casual and cool cotton attire while on board. Nights can be chilly and/or drizzly. A sweater, light jacket or windbreaker should be sufficient on a cool evening.

Cocos Island
Among Cocos Island’s many attributes is a startling degree of biodiversity. This Island’s world-renowned waters explode with life, including innumerable white tip reef sharks, schooling hammerhead sharks, dolphins, mantas and marbled rays, giant moray eels, sailfish, and of course the occasional whale shark. Other common encounters are large schools of jacks and tuna, silky sharks, silvertip sharks, marlin, Creole fish, green turtles and octopus. Diving here is challenging and action-packed.

Malpelo Island is home to an important coral formation as well as a large variety and quantity of marine creatures. Of special interest are hammerhead sharks with awe-inspiring schools of 300 individuals commonly encountered. The two most outstanding phenomena in Malpelo are the huge numbers of free swimming and cluster moray eels along with the colossal congregations of silky sharks that often join with hammerheads to form enormous mixed schools. Extraordinarily, Malpelo is one of the few places that a diver may chance upon the elusive Small Tooth Sand Tiger, which is also known as the Spotted Ragged-tooth shark (Odontaspis ferox).

To see all Undersea Hunter Group Liveaboards click here.