Crab - Polybius
Polybius henslowi
Family: Portunidae
Size: up to 5 cm wide
Depth: up to 100 meters
Habitat: It usually occurs in the water column.
General: Polybius henslowii is a species of crab, the only species in the genus Polybius. It is a capable swimmer and feeds in open water in the north-east Atlantic Ocean and western Mediterranean Sea.