Speckled Swimming Crab
Arenaeus cribrarius
The Speckled Swimming Crab is a sand-colored coastal crab covered with small pale spots and equipped with paddle-like rear legs.
Speckled Swimming Crabs inhabit sandy beaches, surf zones, bays, and nearshore bottoms around Florida. Their spotted shell provides camouflage against sand and shell fragments.
They often bury until only the eyes and antennae remain visible, then emerge to hunt or scavenge. Strong rear paddles allow rapid swimming.
Habitat:
Coastal Waters, Beaches and Dunes, Estuaries and Bays
Area / Range:
Atlantic Coast, Gulf Coast, Florida Keys
Diet:
They eat clams, small fish, shrimp, worms, other crustaceans, and carrion.
Behavior:
They bury in loose sand, swim quickly when disturbed, and use strong claws to handle prey and defend themselves.
Day, Night
Active Times:
Best time to see:
In shallow surf and sandy coastal water, especially at low light or after waves uncover buried animals.
Florida Native Status:
Native
Conservation Status:
Common in Florida coastal waters where clean sandy habitat remains available.
Safety Level:
Use Caution
Safety Information:
Keep fingers away from the claws. Observe in place and wear protective footwear when wading where crabs are active.
Benefits to Property:
It scavenges organic material and serves as prey for fish, rays, turtles, and shorebirds.
Property Concerns:
It does not damage property. Shoreline pollution and loss of natural sandy habitat are larger concerns.
Fun Fact:
The scientific name cribrarius refers to the sieve-like pattern of small spots across the shell.
Wildlife Laws:
Collection and harvest are subject to current FWC saltwater rules, license requirements, gear limits, and protected-area restrictions.
Identification:
Look for an oval tan to olive shell densely covered with small cream spots, long side spines, blue or purple leg markings, and flattened rear swimming legs.