Cocos Island, Costa Rica – The Ultimate Hammerhead Frontier

Embark on a voyage to the legendary Cocos Island, a remote volcanic outpost famous for massive schools of hammerheads, hunting sharks, and deep-water pelagics.

The Destination: Cocos Island National Park

Rising from the deep Pacific Ocean 340 miles off Costa Rica's west coast, Cocos Island is a lush, uninhabited volcanic island covered in tropical rainforest and waterfalls. Under the surface, its volcanic seamounts intercept major nutrient-rich ocean currents, acting as a beacon for schooling sharks, rays, and massive schools of jacks.

Signature Dive Highlights

• Bajo Alcyone: Globally ranked as one of the top dive sites on Earth. Hook onto this seamount at 90 feet and watch schools of hundreds of scalloped hammerhead sharks circle overhead.
• Manuelita Deep & Shallows: A high-energy site where whitetip reef sharks form massive hunting packs at night, and hammerheads visit cleaning stations during the day.
• Big Animal Encounters: Regular sightings of giant manta rays, whale sharks, marble rays, silky sharks, Galapagos sharks, and pods of wild dolphins.

The Aggressor Liveaboard Experience

Cruising to Cocos requires a 36-hour crossing, and the Cocos Island Aggressor is built to handle it in style and safety. The yacht features spacious, air-conditioned staterooms, a beautiful salon, hot tub, and a dedicated camera table. Aggressor's legendary service includes chef-prepared meals, hot snacks after dives, and complimentary local beer and wine.

Trip Details & Inclusions

Diver Level & Conditions

Diving at Cocos Island involves deep water, strong currents, thermoclines, and open-ocean swells. All divers must have an Advanced Open Water certification and a minimum of 100 logged dives. Water temperatures range from 72°F to 80°F, so a 5mm wetsuit with hood is recommended. Dive computers and surface marker buoys are mandatory.