Seefeder. Nächtlicher Nahrungserwerb durch Filtration im Flachwasser unterhalb der Spring-Niedrigwasser-Grenze. Die im Grobsediment stehenden Kolonien zeigen strömungsbedingtes Schwanken und tordieren um die Längsachse.

The film shows several stocks of the nightactive seafeather Scytaliapsis djiboutiensis in their natural habitat about 2 meters deep on sediment bottom in the shallow water of the Red Sea. The film was made using underwater light on several nights and during different current intensities. The seafeathers, which can be turned around on their flexible stems, adjust passively transverse to the direction of the current. They maintain this position even against the oscillation of the water caused by waves and bend backwards and forwards with the direction of the oscillating current. Circular currents cause torsions of the stocks.