green sea urchin from oslo, norway

atlantic ocean eye green sea urchin people north sea ocean floor oslo fjord rock object underwater bottom dweller cold water eastern ocean epibenthic fish eye fjord life lividus miliaris mobile spines norwegian marine life paracentrotus parechinidae psammechinus saccharina saccharine latissima scandinavian life sea urchins shore urchin strongylocentrotus urchin