Remote Pacific liveaboard diving where hammerheads gather around volcanic pinnacles
Overview
Cocos Island is a remote Costa Rican national park and UNESCO World Heritage site reached on multi-day dive expeditions from Puntarenas. Experienced divers come for the possibility of schooling scalloped hammerheads, reef sharks, rays, jacks and volcanic seamounts, not guaranteed encounters. Sea Hunter and the Aggressor vessels publish Cocos itineraries; Argo is currently deployed elsewhere. Most trips spend about 32-36 hours at sea each way and visit sites by skiff. Strong currents, changing visibility, deep profiles and limited evacuation options make this a serious expedition. The 2026 park regulation allows additional guided snorkeling, apnea and land activities only with specific authorization, so a dive booking does not guarantee them. Budget for park fees, insurance, transfers, and a buffer night on each side.
Schooling scalloped hammerheads, whitetip reef sharks, Galapagos sharks, jacks and rays around volcanic outcrops. No sighting guaranteed.
Authorized ocean-going dive liveaboard from Puntarenas with a long open-ocean crossing, dive skiffs and multiple days at Cocos.
Protected UNESCO-listed oceanic rainforest and pelagic ecosystems. Park staff allocate sites and monitor visitor activity.
Quick shortlist before you jump into the full planning page.
Top species linked to approved dive spots in Cocos Island.
Experienced current-savvy scuba divers and underwater photographers who can accept weather disruption and remote evacuation limits.
2 linked spots
