HELCOM RED LIST Biotope Expert Team
Baltic aphotic bottoms with at least 90 % coverage of sand. Sand has less than 20 % of mud/silt/clay fraction (<63 µm), and the proportion of sand (grain size 0.063–2 mm) exceeds 70% of the combined gravel and sand fraction. No perennial attached erect group has ≥ 10 % coverage.
Substrate is sand. Depth below approximately 30 m. Appears in high energy exposure areas.
Whole Baltic Sea
HELCOM 1998: 2.5 Sandy bottoms
2.5.1 Aphotic zone
A5 Sublittoral sediment
A5.2 Sublittoral sand
A5.27 Deep circalittoral sand
A5.273 Baltic sandy bottoms of the aphotic zone
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