Lesser Blue Crab
Callinectes similis
The Lesser Blue Crab is a smaller relative of the familiar blue crab, found in sandy Florida coastal waters and estuaries.
Lesser Blue Crabs live from shallow surf zones and bays to offshore sand bottoms. Paddle-shaped rear legs make them fast swimmers.
They resemble young blue crabs but remain smaller and often show more purple-blue on the legs and claws. They help recycle animal material on the seafloor.
Habitat:
Coastal Waters, Estuaries and Bays, Beaches and Dunes
Area / Range:
Atlantic Coast, Gulf Coast, Florida Keys
Diet:
They eat small fish, mollusks, worms, shrimp, carrion, and other bottom-dwelling animals.
Behavior:
Lesser Blue Crabs bury in sand, swim quickly with their rear paddles, and raise their claws when threatened.
Day, Night
Active Times:
Best time to see:
In clear shallow coastal water, sandy bays, and surf zones, especially at night with a light.
Florida Native Status:
Native
Conservation Status:
Common in suitable coastal habitat and not considered imperiled.
Safety Level:
Use Caution
Safety Information:
Do not pick up a live crab by the claws. Observe in place or handle only with proper tools because the pincers can cause a painful pinch.
Benefits to Property:
It scavenges organic material and supports fish, birds, and larger marine predators.
Property Concerns:
It causes no meaningful property damage. Polluted runoff and shoreline alteration reduce habitat quality.
Fun Fact:
The last pair of legs is flattened like paddles, allowing this crab to swim sideways and backward with surprising speed.
Wildlife Laws:
Marine life collection and harvest are governed by current FWC saltwater rules. Licensing, gear, and protected-area restrictions may apply.
Identification:
Look for a broad olive or gray shell with nine teeth along each side, blue or purple legs, reddish claw tips, and flattened swimming paddles. The shell is more finely textured than that of the larger blue crab.