Maerl beds on Atlantic infralittoral coarse sediment

Beds of maerl in coarse clean sediments of gravels and clean sands, which occur either on the open coast or in tide-swept channels of marine inlets (the latter often stony). In fully marine conditions the dominant maerl is typically Phymatolithon calcareum (MB3-221), whilst under variable salinity conditions in some sealochs beds of Lithothamnion glaciale (MB3-222) may develop.

Código Eunis 2021: MB322