Small crabs

These crabs can be found on sandy beaches.
Small crabs holes in the sand to live in them, these harmless crabs can be in touch, but catching them is not easy either because the color is the same as sand and very fast running.

This crab has an important role on the beach because if there is still this little crab on the beach then the beach has not been polluted.
This little crab also eat fish carcass stranded on the edge of the sea.