Baltic circalittoral mixed sediment dominated by hydroids (Hydrozoa)

Baltic circalittoral bottoms in the aphotic zone with at least 10- 90 % coverage of hard (rock/boulders/stone) and 10-90 % soft substrata (e.g. muddy/coarse sediment/sand). Epibenthic cnidarians cover at least 10 % of the seabed, and more than other perennial attached erect groups. Out of the epibenthic cnidarians, hydroids constitute at least 50 % of the biomass.$$$Physical environment$$$Substrate is soft or crystalline rock, boulders or stones mixed with mobile substrates such as sand or coarse substrate. Depth is typically from 20 to 100 meters. $$$Characteristic species $$$Laomedea spp, Cordylophora caspia$$$Geographic range$$$Known from Russian waters

Código Eunis 2021: MC4331