Costa Rica · Cocos Island

Bajo Alcyone

Also known as: Alcyone Seamount

Best time to dive

June to December; December to May

What you might see

  • Eagle rayLikely
  • Grey reef sharkPossible
  • Hammerhead sharkLikely
  • Manta rayLikely
  • Whale sharkPossible

Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.

Certification & difficulty

Advanced Open Water - advanced conditions (currents/depth); dive within your training.

Snorkelling

Not a snorkel site - Not offered - deep offshore seamount, scuba only

Safety notes

Strong offshore currents, deep profile (approaching recreational limits), remote location (~36hr from mainland, no fast medical evacuation), thermoclines, boat traffic/DCS risk given repetitive deep diving

Permits & fees

Cocos Island National Park entrance fee (~$50 reported, collected by liveaboard operator as part of package); access is liveaboard-only, no day-trip or land-based diving permitted; SINAC/MINAE park regulations apply

Permits and operators change - confirm before booking.

Location

Nearest hub: Chatham Bay

This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.