All Levels

Hammerheads

Dec-May

Cocos Island

UD Rating – 4 Star

Okeanos Aggressor II

Offers great opportunities to explore the unique marine environment surrounding Cocos.

Spend a week on-board this well renowned brand’s answer to luxury in the Cocos islands. Aggressor Fleet offers above average standard liveaboards around the globe and this one is not to be missed.

The Okeanos Aggressor II offers you an opportunity to explore the unique marine environment surrounding the Cocos Islands while delivering a high level of service above and below water. She departs for 10 night itineraries with the occasional 8 and 12 night’s itinerary from Puntarenas with the 10 crew members aboard delivering superb service from morning coffee in your room to providing you with hot towels at the end of night dives. The Okeanos Aggressor II provides Nitrox facilities and a range of courses aboard, all at an extra cost with an accompanying motorised dingy used to transfer you to the perfect dive spot.

There are 12 large cabins over three decks all with en-suites, mirrored cabinet, wardrobe, bathrobes, fresh towels, hairdryer and toiletries. There are 9 deluxe cabins with a double bed and twin beds in bunk bed style, 1 master cabin with a queen bed and 2 owner suites, 1 with a king bed and 1 with 2 twin beds. The sun deck provides shaded and un-shaded areas for divers to relax and help themselves to iced cold drinks and delicious snacks throughout the day, with baked breads and biscuits showing up in the morning and appetizers in the afternoon. All meals are served in the large air conditioned salon with the hot breakfast being cooked to order, lunch is usually a buffet and dinner is waiter served.

The Okeanos Aggressor II has a large dive deck with each diver having their own suit up, it has a space that features a water fountain, a mask defogging station, a weight belt area, two showers and a supply of fresh towels. She provides special rinse tanks for cameras and a multi-tiered carpeted photo table with cleaning materials for the keen and interested underwater photographer, as well as a photo pro to assist you with your photography or to take a customised video of your diving holiday. A camera and video rental service is available at daily and weekly rates aboard.

Suite (2 People Sharing)

The Suites have a king bed or two twin beds side by side with a private head and shower. Your stateroom is the perfect place to read a book, nap in between dives and fully recharge for the next day.

  • King bed or two twin beds side by side
  • Amenities from bathrobes to individual climate control
  • Services from morning beverage service to nightly turn down service
  • Suite 11 is for couples and single supplement only.

Master Stateroom

A comfortable stateroom, the master stateroom has a queen bed with private head and shower. Your stateroom is the perfect place to read a book, nap in between dives and fully recharge for the next day. This stateroom is for couples and single supplement only.

  • Queen bed
  • Amenities from bathrobes to individual climate control
  • Services from morning beverage service to nightly turn down service
  • This stateroom is for couples and single supplement only.

Deluxe Stateroom

A comfortable stateroom with a double bed (lower) and one single bed (upper) bunk-style with a private head and shower. Your stateroom is the perfect place to read a book, nap in between dives and fully recharge for the next day.

  • Amenities from hairdryer to individual climate control
  • Services from morning beverage service to nightly turn down service

Route Options

Cocos Island is a dive location where divers will expect to see large pelagic fish like huge schools of hammerhead sharks. Most of the dives done are close to surrounding rocks and islands as this is where the best sightings will be found.

The Okeanos Aggressor II offers 8, 10 and 12 night itineraries around the Cocos Islands. Divers should be comfortable diving in stronger currents and open water conditions with thermodines. There are 3 dives per day and diving is conducted from large dive tenders. Cocos Island is essentially a huge mountain starting thousands of meters below the surface and sticking out as an impressive island with steep cliffs and little island groups. The extremely wet climate and oceanic character gives Cocos a character that is not shared with either the Galapagos or any of the other islands in this part of the world.

Vessel Details

Year Built / Refurbished 1985/2024
Length 120 ft
Beam 27
Engines Twin proven DDC main engines
Number of Cabins 9 deluxe cabins, 1 master cabin and 2 owners suites
Communication & Navigation Systems GPS/ echo sounder/ radar/ autopilot/ weather facsimile/ VHF radios/ SSB radio
Salon & Dining Area Large air conditioned dining area
Nightly Entertainment Diving, fish identification presentations, movies, games and more.
Air Compressors 2 x air compressors
Equipment Rental Scuba diving equipment rental available onboard - please see price list below
Emergency Equipment Oxygen system/ Medic First Aid Kit
Dive Deck Large dive deck with each diver having their own suit up space. Features a water fountain, mask defogging station, weight belt area, two showers and a supply of fresh towels. All dives from tenders.
Wetsuit Recommendation 3-5mm wetsuit recommended
Full set USD260
BCD, regulator & computer USD225
Regulator USD90
Dive Computer USD90
Mask, Fins & Snorkel USD75
Torch USD8
Wetsuits USD70
Equipment Rental All equipment rental prices are for 10 nights charters except the dive light which is per night.

Available Experiences

ITINERARIES AVAILABLE IN THIS DESTINATION

Marcelina

Friday, 06 December 2013

Fabulous Fiji by Marcelina Jesus on Sport Diver Magazine

Lured by the promise of world-class reefs and adrenaline-fueled shark encounters Marcelina Jesus ventures to the wild islands of Fiji.

Fabulous Fiji by Marcelina Jesus on Sport Diver Magazine

What Our Customers Have To Say

Reviews from our Clients, Journalists, Photo Pro's and our own Experts

Our reviews and blogs are an additional guide to evaluate of the holiday is exactley what you are looking for or not. Some love an Eco-Resort, some love air-con and a flat screen TV, we aim to ensure you get what you are looking for, at great value for money.

Bajo Alcyone

Cocos Island, Costa Rica

Bajo Alcyone is the place to see the Hammerheads amongst other pelagic. The abundancy of resident sea life makes this site one of the island’s signature dives. Mantas, Whitetip Sharks, Whale Sharks, Silky, Blacktip Sharks, and hundreds of schooling Hammerheads are everywhere. And underwater plateau, discovered by Cousteau when he visited Cocos Island, is home to a variety of sharks.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 25m

Dirty Rock

Cocos Island, Costa Rica

Located near Wafer Bay, Dirty Rock is an impressive and exciting dive. Noted as one of our guests’ favourites, here you will come up close and personal with Whale Sharks that often cruise around this site.

Dirty Rock is perhaps best known for the hundreds of Marble Rays and huge schools of Jacks that can be seen here. A swim through one of the schools is definitely worth the trip!

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 39m

Big Dos Amigos

Cocos Island, Costa Rica

Dos Amigos Grande is better known for its huge arch, a swim through so big that an entire diving group can move through it at the same time, Marble Rays swimming among divers, Eagle Rays feeding or mating, and schooling Hammerheads are typical scenarios at this memorable dive site.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 18m

Lone Stone

Cocos Island, Costa Rica

There are some nice shark photo opportunities throughout the dive, and a very cooperative marbled stingray. Slowly swimming through the huge rocks, guests will noticed a vertical crack in the reef, about 25-30 high and perhaps five feet wide. With shimmering sunlight streaming down from fissures in the top, you could see the fish, hiding from the current, and the ever-present predators. There are silver Snappers, Yellow Grunt, Red Cardinal Fish, and big Trumpet fish in one vertical school.

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 30m

Submerged Rock

Cocos Island, Costa Rica

Underwater, this rock plunges down both sharply and gradually. It is broken up with large ledges, some with sandy bottoms, and an outer pinnacle. The colourful, prolific fish life gives relief to the harsh contours of the reef. Sometimes the fish gather in such numbers that they momentarily blot out the sun.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 18m

Lobster Rock

Cocos Island, Costa Rica

On this finger-like rock, divers can easily approach large white tips lying on the bottom in great numbers. In the deep sandy area surrounding it, the elusive rosy-lipped batfish can be found between 90 and 120 feet.

Marine Life: White tips, marble rays, manta rays, eagle rays, red lip batfish, frogfish, garden eels

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 33m

Manuelita

Cocos Island, Costa Rica

Manuelita dive site has a boulder formation where you will find hammerhead sharks along with other marine life including lots of White Tips, Marble Rays and schools of Creoles. A great day and night dive. Known as the dive site that never sleeps!

  • Dive Type: Deep Dive
  • Diver Level: Open Water Diver
  • Max Depth: 30

Ubing Rock, Wafer Bay

Cocos Island, Costa Rica

Located at Wafer Bay, the southeast slope of Ubing Rock attracts schooling Hammerheads. This rock drops to a sandy bottom. The rock begins at 20m and falls all the way to 110m.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 30m

Bird Island, Chatham Bay

Cocos Island, Costa Rica

Dove from Chatham Bay, southeast of Manuelita, this site provides a variety of marine life including Frog Fish, lobsters, morays, rays, White Tip Sharks and Hammerheads. There is even a cleaning station.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 30M

Manta Corner

Cocos Island, Costa Rica

South of Cocos Island. The reef is about 27 metres deep if you want to full presence of manta rays! The reef is believed to be part of the submerged mountain range. It can be a boat, drift or deep dive.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 33m

Little Dos Amigos

Cocos Island, Costa Rica

Known for being a hammerhead cleaning station. Located south-east of Cocos Island, below Big Dos Amigos dive site. The visibility is 20m. This dive site often suprises divers as the open sea current first reaches the island at this point bringing in a wide variety of marine life.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 30m

Cabo Atevida

Cocos Island, Costa Rica

Remote from other dive sites on the east side of the island but also attracted by hammerheads like most Cocos dive sites. The marine life has high density and has a wide variety living or passing here.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 30m
Dates Duration Route Room Type Price
17 Apr 2025
27 Apr 2025
10 Nights Cocos Island Adventure Deluxe Stateroom £4913
12 May 2025
22 May 2025
10 Nights Cocos Island Adventure Deluxe Stateroom £4913
12 Dec 2025
22 Dec 2025
10 Nights Cocos Island Adventure Deluxe Stateroom £4913
3 Jan 2026
13 Jan 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
24 Jan 2026
3 Feb 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
7 Mar 2026
17 Mar 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
18 Apr 2026
28 Apr 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
9 May 2026
19 May 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
30 May 2026
9 Jun 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
18 Jun 2026
28 Jun 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
11 Jul 2026
21 Jul 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
29 Jul 2026
6 Aug 2026
8 Nights Cocos Island Adventure Deluxe Stateroom £4211
8 Aug 2026
18 Aug 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
26 Aug 2026
3 Sep 2026
8 Nights Cocos Island Adventure Deluxe Stateroom £4211
5 Sep 2026
15 Sep 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
23 Sep 2026
1 Oct 2026
8 Nights Cocos Island Adventure Deluxe Stateroom £4211
14 Nov 2026
24 Nov 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
5 Dec 2026
15 Dec 2026
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
26 Dec 2026
5 Jan 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £4991
20 Jan 2027
30 Jan 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
16 Feb 2027
26 Feb 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
10 Mar 2027
20 Mar 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
3 Apr 2027
13 Apr 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
1 May 2027
11 May 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
25 May 2027
4 Jun 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
14 Jun 2027
24 Jun 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
26 Jun 2027
4 Jul 2027
8 Nights Cocos Island Adventure Deluxe Stateroom £4328
12 Jul 2027
22 Jul 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
26 Jul 2027
3 Aug 2027
8 Nights Cocos Island Adventure Deluxe Stateroom £4328
11 Aug 2027
21 Aug 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
23 Aug 2027
31 Aug 2027
8 Nights Cocos Island Adventure Deluxe Stateroom £4328
10 Sep 2027
22 Sep 2027
12 Nights Cocos Island Adventure Deluxe Stateroom £6083
11 Oct 2027
23 Oct 2027
12 Nights Cocos Island Adventure Deluxe Stateroom £6083
4 Nov 2027
14 Nov 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
27 Nov 2027
7 Dec 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
20 Dec 2027
30 Dec 2027
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
3 Jan 2028
13 Jan 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
23 Jan 2028
2 Feb 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
4 Feb 2028
14 Feb 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
22 Feb 2028
3 Mar 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
5 Mar 2028
15 Mar 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
23 Mar 2028
2 Apr 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
4 Apr 2028
14 Apr 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
22 Apr 2028
2 May 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
4 May 2028
14 May 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
23 May 2028
2 Jun 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
6 Jun 2028
16 Jun 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
25 Jun 2028
5 Jul 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
7 Jul 2028
17 Jul 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
26 Jul 2028
5 Aug 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
8 Aug 2028
18 Aug 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
28 Aug 2028
7 Sep 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
10 Sep 2028
20 Sep 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
29 Sep 2028
9 Oct 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
12 Oct 2028
22 Oct 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
30 Oct 2028
9 Nov 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
12 Nov 2028
22 Nov 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
1 Dec 2028
11 Dec 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108
13 Dec 2028
23 Dec 2028
10 Nights Cocos Island Adventure Deluxe Stateroom £5108