Liocarcinus navigator has a dark brown carapace up to approximately 33 millimetres (1.3 in) wide,[3] with lighter pereiopods.[5] The frontal margin of the carapace, between the eyes, has a fringe of hair but no spines.[3][5]
^Sven Gehrmann (2008). "Schwimmkrabbe, Polybius navigator (Herbst, 1794)". Die Fauna der Nordsee – Niedere Tiere I: Krebstiere, Asselspinnen, Ringelwürmer, Stachelhäuter, Manteltiere & Schwämme [The fauna of the North Sea – lower animals I: crustaceans, sea-spiders, annelids, echinoderms, molluscs and sponges] (in German). Vol. 1. Books on Demand. p. 80. ISBN9783981255300.
^ abMario de Kluijver & Sarita Ingalsuo. "Liocarcinus arcuatus". Macrobenthos of the North Sea – Crustacea. Marine Species Identification Portal. Retrieved December 8, 2012.