Isskrap Ectocarpus Published January 22, 2013 at 2136 × 2848 in Gallery ← Previous Next → The top metre below the surface is often scraped clean from algae by the ice during winter. This clean space rapidly fills up with annual filamentous alga such as the green algale Cladophora glomerata and the brown algae Ectocarpus siliquosus. Like this:Like Loading...