"Baltic photic coarse sediment characterized by infaunal crustaceans"@en . . "SDN:M23::AA-I3N" . "The habitat 'Baltic photic coarse sediment characterized by infaunal crustaceans' as defined under the HELCOM HUB classification system. For more information visit 'http://helcom.fi/baltic-sea-trends/biodiversity/helcom-hub/hub/aa-i3n'."@en . .