Caribbean Spiny Lobster in Cozumel
Caribbean Spiny Lobster (*Panulirus argus*) in Cozumel: how to identify it, where it hides, and why it has no claws.
No large claws — this is not a clawed lobster. Long thick spiny antennae, a mottled body with pale spots, and two prominent horns above the eyes.
Quick ID
| Scientific name | Panulirus argus |
|---|---|
| Group | Crustaceans — Lobster, Shrimp & Crabs |
| Typical size | 20–45 cm |
| Depth range | 2–30 m |
| When to see it | Year-round |
| Active | Night |
| Conservation status | Vulnerable |
| Notes | Best seen on night dives |
Where You Will See It In Cozumel
Under ledges and in crevices at Palancar Bricks, Yucab and Santa Rosa, with antennae protruding by day and the whole animal out on night dives.
Reliable sites: Palancar Bricks, Yucab, Santa Rosa Wall.
Behaviour
Hides by day and forages at night. Produces a rasping alarm sound by rubbing the antenna base, audible underwater. Famous for single-file queuing migrations, though those are seasonal and rarely witnessed on a dive.
Commonly Confused With
- Slipper lobster — Slipper lobsters are flattened with broad plate-like antennae and no long spines.
- Clawed lobsters — No clawed lobsters occur on Cozumel reefs.
Diving Etiquette And Safety
Do not touch, and do not pull one out for a photograph. Taking lobster inside the marine park is prohibited.
Part of the Cozumel marine life guide · see Cozumel dive sites · plan your Cozumel dive trip