cool-critters: Cuthona yamasui Cuthona yamasui is a species of sea slug, a nudibranch. This species
cool-critters: Cuthona yamasui Cuthona yamasui is a species of sea slug, a nudibranch. This species seems to be quite variable in colour. Its habitat is the tropical Indo-West Pacific.photo credits: pinterest, seaslugforum, -- source link