Cocos Island, Costa Rica
Alcyone
A seamount off the most remote island in the Pacific, with walls of hammerheads.
About the dive
Alcyone is an advanced dive site in Cocos Island, Costa Rica. Divers have logged 708 dives here, going to 29 m on average in around 17 m of visibility. 20 species are recorded here month by month; the most sighted are great hammerhead, scalloped hammerhead and eagle rays. Sightings peak in July, October and December.
- Level
- Advanced
- Entry
- Boat
- Avg. max depth
- 29 m
- Visibility
- 17 m
- Dive time
- 49 min
- Logged dives
- 708
- Busiest months
- Jul · Oct · Dec
- Region
- Cocos Islands
Most sighted here
Great hammerhead
Scalloped hammerheadPhoto: Georgina Jones · CC BY-SA
Eagle raysPhoto: Daniel Torobekov · CC0
Whitetip reef shark
What you’ll see, month by month
The most-sighted species at Alcyone and the months they are logged. The brighter the cell, the more sightings.
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Great hammerhead | ||||||||||||
| Scalloped hammerhead | ||||||||||||
| Eagle rays | ||||||||||||
| Whitetip reef shark | ||||||||||||
| Silky shark | ||||||||||||
| Stingrays | ||||||||||||
| Moray eels | ||||||||||||
| Oceanic Blacktip Shark | ||||||||||||
| Jacks | ||||||||||||
| Tuna | ||||||||||||
| Surgeonfish | ||||||||||||
| Angelfish | ||||||||||||
| Chinese trumpetfish | ||||||||||||
| Parrotfish | ||||||||||||
| Whale shark | ||||||||||||
| Butterflyfish |
Your next dive could be Alcyone.
See what’s spotted this month, log every dive and keep every sighting, with nearly 15,000 dive sites in one app.
Get the appJoin 5,000+ divers and snorkelers
