Frog crab / red spanner crab

Not a frog, barely crab (but still a true crab)

Has 8 legs, 2 claws, but only walks on 4 legs

Red Frog Crab (Ranina ranina)

Also known as the spanner crab, the red frog crab is a species of frog crab that is found throughout parts of the Pacific. Like other frog crabs this species is nocturnal and takes shelter in the sand during the day. Like the unrelated mole crabs the red frog crabs claws are modified for digging and allow it to bury itself into the sand easily.

Red frog crabs are edible and are fished commercially throughout their range.

Classification

Animalia-Arthropoda-Crustacea-Malacostraca-Decapoda-Brachyura-Raninidae-Ranina-R.ranina