The subspecies occasionally uses floating algal or rush mats, when available.

The brown, turbid water was choked with broad algal mats, some of them more than a yard across.

Oligochaetes are also abundant in areas supporting porous and spongy layers of algal mat.

The larvae and pupae live in cool, shallow, slow-flowing water with a preference for algal mats.

All along the coast here, an algal mat is developed in the inter-tidal zone.

Animals that grazed on algal mats were ultimately the direct ancestors of the Placozoa.

An algal mat is a layer of usually filamentous algae on marine or fresh water soft bottoms.

As the algae fell to the bottom of the lake, any plants or animals that had recently died were preserved by the algal mats.

It uses its bill to turn over stones, algal mats and other objects to get at prey hidden beneath.

It is possible that this creature did move and fed upon the algal mats of the precambrian oceans.