See text The Grapsidae are a family of crabs known variously as marsh crabs, shore crabs, or talon crabs.

[1] The family has not been confirmed to form a monophyletic group and some taxa may belong in other families.

[2] They are found along the shore among rocks, in estuaries, marshes, and in some cases pelagic among drifting seaweeds and flotsam.

A number of taxa, formerly treated as subfamilies of the family Grapsidae are now considered families in their own right, including the Varunidae and Plagusiidae.

[3] Forty species and ten genera remain in the family, two of the genera known only from fossils:[3]