Atlantic Ghost Crab

Identification overview

The Atlantic ghost crab, Ocypode quadrata, is a shoreline animal rather than an underwater reef resident. Its pale, roughly square carapace blends with beach sand. Raised eyes, long walking legs and unequal claws complete the familiar outline. A clear photograph should show this combination instead of relying on pale color alone.

Florida beach context

National Park Service accounts document living ghost crabs on Florida Atlantic beaches at Fort Matanzas as well as at Gulf Islands National Seashore. The species belongs in the beach-and-shoreline portion of a regional marine-life directory. Florida DEP’s 2014 St. Lucie Inlet Preserve plan also describes this crab among local beach predators.

Often the first sign is not a crab but a burrow opening with tracks nearby. The tracks resemble spaced commas in the sand. A burrow is an active shelter, not a hole to probe with a stick or flood to force out its occupant.

What it eats

Ghost crabs are opportunistic predators and scavengers. Coquina clams, mole crabs and other small beach animals provide food, while a washed-up dead fish can also attract attention. They may eat shorebird or sea-turtle eggs and hatchlings. This is part of their role in the shoreline food web; an observer should not intervene in a natural feeding event or stage one with bait.

Living out of water

Adults spend substantial time on land but still need moisture for their gills. They visit wet sand and the surf zone, and egg-bearing females also need to keep their egg masses moist. Activity is often easier to observe around dusk or after dark than during the heat of the day.

Burrows provide refuge from weather and predators. Stay far enough away that the animal can emerge or retreat without being cornered. If beach wildlife rules limit nighttime access or lighting, follow those rules rather than treating a nocturnal species as a reason to ignore them.

Identification and care

A swimming crab with paddle-shaped rear legs is built differently from this open-beach runner. For ghost-crab identification, record the square body, eyes, claws and habitat together. Sand camouflage can obscure detail, so a distant image may support only a general crab record.

Leave burrows, dune plants and nearby nests undisturbed. Avoid driving over beach habitat and never handle wildlife simply to improve a photograph. Current park and locality rules govern any collection; this guide grants no permission to remove crabs. An encounter that leaves the animal behaving normally is the most useful observation.

References

• Species biology reference
• Species biology reference
• Florida DEP: 2014 St. Lucie Inlet Preserve State Park plan, local animal record
• FWC: Current recreational saltwater rules

Current Florida collection cautions

Reviewed November 12, 2026. No species-specific recreational harvest allowance is established by this profile. Before any collection, verify applicable FWC requirements and the rules of the particular beach, park or refuge. Do not disturb burrows, dune vegetation or protected nests; local nighttime access and lighting restrictions still apply. This identification page gives no permission to harvest and no assurance of safe consumption. Official FWC recreational rules

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