Baltic offshore circalittoral biogenic bottoms characterized by epibenthic bivalves

Baltic offshore bottoms in the aphotic zone, below halocline/pycnocline with with at least 90 % coverage of rock, boulders or stones of more than 63 mm in diameter. Sessile/semi-sessile epibenthic bivalves cover at least 10 % of the seabed and more than other perennial attached erect groups.

Código Eunis 2021: MD231