A submerged seamount that acts as a cleaning station for scalloped hammerheads, you kneel in the rocks at 30m and watch schools…A submerged seamount that acts as a cleaning station for scalloped hammerheads, you kneel in the rocks at 30m and watch schools of 100+ stack overhead. Whitetip reef sharks by the hundred at night, tiger sharks, marbled rays, whale sharks and vast bait balls. Cousteau named this seamount after his ship Alcyone and called Cocos 'the most beautiful island in the world'. Cocos is the model for Isla Nublar in Jurassic Park, a UNESCO World Heritage site since 1997, and one of the last places on earth with an intact shark population. Anchorage: Liveaboard-only; 36-hour crossing from Puntarenas, national park permits required. Hazards: No site-specific hazards noted, brief normally. Altro