The carapace of P. henslowii is almost circular, 48 millimetres (1.9 in) wide and 40 mm (1.6 in) long. The first pair of pereiopods (walking … See more

Polybius is found in the north-east Atlantic Ocean from the British Isles to Morocco, and in the western Mediterranean Sea. Very abundant swarms have been found along the coasts off Galicia (Spain) and off Portugal. Rare specimens have been caught in the See more

Polybius henslowii was first described by William Elford Leach in 1820, as the only species in his new genus Polybius. Although a number … See more

Polybius henslowii is a capable swimmer, and can be found swimming near the ocean surface, where it feeds on a mixture of squid, fish, and other crustaceans, including … See more