The unchecked 3 photos in WoRMS Hyas araneus page, by Nuyttens, Filip, look every bit like Spiny Spider crab Maja squinado, as in wikipedia's Maja_squinado ;& very little like Hyas araneus. My collins' pocket guide '96, ISBN 0002200317 has on H.a "carapace with a few large tubercles" &on it's rostrum (ie 'nose') "rostrum of 2 tapered close-set horns", but of Maja squinado's "rostrum consists of 2 thick, forwardly directed horns", & "characteristically, the eye is completely retractile into the orbit". (sadly M. squinado has been split into 2 very similar species so that GBs' (& presumably Hollands') are now M. brachydactyla.
To upload: By uploading a picture you declare you have the right to do so. Please give as much information on the picture as possible; minimum requirement is photographer and/or copyright holder. Click here for complete Copyright Notice.