Costa Rica · Cocos Island
Dos Amigos Grande
Also known as: Big Dos Amigos
Best time to dive
January to December; June to December; December to May
What you might see
- Grey reef sharkPossible
- Hammerhead sharkLikely
- Tiger sharkPossible
- 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 - liveaboard scuba-only site
Safety notes
Current can push divers through/around the arch requiring good buoyancy and awareness, remote offshore location, thermoclines
Permits & fees
Cocos Island National Park fee (~$50, bundled by liveaboard); liveaboard-only access
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.

