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Cocos Island (Dirty Rock / Alcyone)

Scalloped hammerhead is the reason to dive Cocos Island (Dirty Rock / Alcyone), Costa Rica.

Dive into the live mapLive · 1 encounter here

Costa Rica · Scalloped hammerhead

Cocos Island (Dirty Rock / Alcyone)

Scalloped hammerhead is the reason to dive Cocos Island (Dirty Rock / Alcyone), Costa Rica. Best odds here: high for scalloped hammerhead, peak jun-nov. Access needed ranges up to Experienced, depending which encounter you're after.

1
Species
High
Best odds
Jun-Nov
Peak window
20-35 m
Depth

The encounter

Scalloped hammerhead

20-35 m · Needs Experienced

Peak Jun-Nov

High odds

Other sites in Costa Rica

Bat Islands (Islas Murcielago)1Catalina Islands, Guanacaste1Cocos Island (Isla del Coco)1
Live experience

Go find it live

Open the globe already on Cocos Island (Dirty Rock / Alcyone), set your month and certification, and see real sighting odds update as you do.

Open Atlas Diving
Sighting reliability and peak windows are researched estimates from the Atlas encounter database — not a guarantee. Wildlife moves with temperature and prey. Confirm current conditions with a local operator before booking.