Puntarenas, Costa Rica

Sea Hunter

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Cocos Island expeditions, one of the best hammerhead shark dives in the worldSeven full days of diving, three dives a dayFree Nitrox for certified diversOnly 20 guests in 10 en-suite cabins, with a crew of tenTwo large dive skiffs plus a rigid inflatableIndividual gear lockers, camera stations and two camera rinse tanksOperating at Cocos Island since the early 1990s

About Sea Hunter

Sea Hunter is a 36-metre steel expedition vessel built for long-range trips to Cocos Island, 550 km off the Costa Rican coast. She carries 20 guests in 10 air-conditioned en-suite cabins, with a crew of ten, two large dive skiffs and a rigid inflatable, individual gear lockers, camera stations with 110 and 220 V power and two camera rinse tanks. Free Nitrox, three dives a day and seven full days of diving at one of the best hammerhead shark destinations in the world. Operated by Undersea Hunter Group, at Cocos Island since the early 1990s.

Next departure 29 May 2027 · 1 spots left

Departures by month

October 2026November 2026December 2026May 2027June 2027July 2027+21 more
Choose your departure

Choose your departure date

  • 11Dec
    11 Dec – 21 Dec11D / 10N · up to 21 dives
    Cocos Island Expedition · Puntarenas → Puntarenas
    from USD 7.250 /person
    Full

Included

  • Accommodation in an en-suite cabin
  • All meals
  • snacks
  • soft drinks
  • tea
  • coffee and beer
  • Three dives a day with dive guides
  • Nitrox fills
  • 12 litre tanks and weights
  • Cabin and deck towels and daily housekeeping
  • Laundry service
  • Nautilus Lifeline diver locator and safety kit

Required extras

  • !Cocos Island National Park fees (from 554 USD per person, subject to change)
  • !Ground and marine transfers San Jose to the vessel and back (100 USD per person)
  • !Dive-specific insurance (mandatory)
  • !Fuel surcharge
  • !only if diesel in Costa Rica goes above 3.50 USD per gallon
  • !Flights
  • !Wine and spirits
  • !Hotels in San Jose before and after the trip

Optional extras

  • +Dive gear rental (ScubaPro)
  • +15 litre steel tanks
  • +Private dive guide (from 1200 USD per trip)
  • +Private skiff (from 1000 USD per diver, minimum 4 guests)
  • +Nitrox and other courses on board
  • +Starlink WiFi (50 USD)
  • +Wine and spirits
  • +Crew gratuities
  • +Hotels in San Jose before and after the trip

Cabins

  • Lower Deck Twin / Double Cabin
    Lower Deck Twin / Double Cabin
    Double · sleeps 2 · Lower Deck
    Private bathroom · from 7.590 USD/person
  • Lower Deck Twin Bunk-Style
    Lower Deck Twin Bunk-Style
    Twin · sleeps 2 · Lower Deck
    Private bathroom · from 7.590 USD/person
  • Upper Deck Suite
    Upper Deck Suite
    Suite · sleeps 2 · Upper Deck
    Private bathroom · from 7.590 USD/person

Boat specifications

Length
36 m
Cruising speed
9.5 kn
Engines
Twin GM 16V92, 1200 HP total
Max guests
20
Cabins
10
Min. certification
Advanced OW
Crew
10
Range
3,500 nautical miles
Tanks
30 aluminium 80 cu ft tanks
Engines
Twin GM 16V92, 1200 HP total
Tenders
Two 24 ft fibreglass dive boats and one 17 ft RIB
Year built
1989
Compressors
2 high pressure compressors and 1 Nitrox membrane
Construction
Welded steel with teak work deck
Displacement
250 tons
Maximum speed
10 knots
Cruising speed
9.5 knots
Length overall
36 m (115 ft)

Gear rental: Full ScubaPro rental line on board: BCD, regulator, wetsuit, mask, fins, snorkel and Nitrox dive computers. 15 litre steel tanks on request for a small fee.

Payments: Prices in USD per person. Deposit of 10 to 30 percent to confirm, final payment 60 days before departure. Cocos Island National Park fees and transfers are paid separately.

Boat features

  • 36 m welded steel hull with teak work deck
  • 10 air-conditioned en-suite cabins on the lower and upper decks
  • Indoor air-conditioned saloon and study
  • Library and camera room
  • Sun deck and shaded outdoor areas
  • Camera station with 110 and 220 V power
  • Daily housekeeping and complimentary laundry
  • Satellite phone and internet on board

Food & drinks

  • Three meals a day, buffet style, with international and local cuisine
  • Snacks between dives
  • Soft drinks, tea, coffee and beer included
  • Vegetarian and vegan options on request
  • Wine available on board at extra cost

Diving on board

  • Three dives a day from two 24 ft dive skiffs plus a rigid inflatable
  • Free Nitrox for certified divers
  • 12 litre (80 cu ft) aluminium tanks and weights included, 15 litre steel tanks on request
  • Two high pressure compressors and a Nitrox membrane
  • Full oxygen, Nitrox and rebreather service (guests bring their own rebreathers)
  • Two camera rinse tanks and individual gear lockers
  • Nautilus Lifeline locator, dive sausage, whistle and safety light for every guest
  • Maximum depth 30 m, no decompression diving

Navigation & safety

  • 3 GPS units
  • 2 radars (48 and 32 mile)
  • 2 recording fathometers
  • Radio direction finder SIMRAD
  • Autopilot
  • Two 25-person life rafts
  • 20 personal diver locator systems
  • Fire fighting system throughout the vessel
  • Extensive first aid kit with oxygen

Languages spoken on board

EnglishSpanish

Drawings & Vessel Layouts

Deck plan - lower deck
Deck plan - lower deck
Deck plan - main deck
Deck plan - main deck
Deck plan - upper deck
Deck plan - upper deck