description Pebble Crab Overview
Pebble crab is a common name used for several marine crabs rather than for one universally defined species. It often refers to members of the family Leucosiidae, also called purse crabs or nut crabs, whose compact, rounded or strongly convex carapaces give many species a pebble-like appearance. Individual pebble crabs differ in range and habitat, but members of this group are commonly associated with marine or brackish environments and may live on sandy coastal bottoms.
help Pebble Crab FAQ
Is pebble crab one specific species?
No. Pebble crab is a common name used for several marine crabs, so it does not identify one universally defined species.
Which crabs are often called pebble crabs?
The name often refers to members of Leucosiidae, a family also known as purse crabs or nut crabs. The exact species depends on the region and the source using the common name.
Why are these crabs called pebble crabs?
Many have compact, rounded or strongly convex carapaces that resemble small stones. Their body shape gives the common name its descriptive meaning.
What is a carapace in a pebble crab?
A carapace is the hard upper shell covering the crab's body. In crabs called pebble crabs, it is often rounded, compact and strongly domed.
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