WAega psora
WAlbunea carabus
WArgulus foliaceus
WArtemia salina
WAsellus aquaticus
WAstacus astacus
WBalanus balanus
WCalappa calappa
WCalappa hepatica
WCancer pagurus
WCapitulum mitella
WCarcinus maenas
WCarpilius maculatus
WCharybdis feriata
WChelonibia testudinaria
WConchoderma auritum
WCrangon crangon
WDromia personata
WGammarus locusta
WGammarus pulex
WGecarcinus ruricola
WGelasimus vocans
WGoneplax rhomboides
WGrapsus grapsus
WGreat spider crab
WGuinusia chabrus
WHomarus gammarus
WLepas anatifera
WLepidurus apus
WLiocarcinus depurator
WLithodes maja
WMacrobrachium carcinus
WMegabalanus tintinnabulum
WNephrops norvegicus
WOcypode cursor
WOdontodactylus scyllarus
WOniscus asellus
WPagurus bernhardus
WPanulirus homarus
WPetrochirus diogenes
WPhalangipus longipes
WPlanes minutus
WPortunus armatus
WSaduria entomon
WScyllarus arctus
WRanina ranina
WSquilla mantis
WTanymastix stagnalis
WZosimus aeneus