Physiological Ecology of the Deposit-Feeding Sea Star Ctenodiscus crispatus: Ciliated Surfaces and Animal-Sediment lnteractions

Abstract

A non selective deposit feeder on organically rich sediment, averaging 9.7 % of the substrate which is very fine and uniform. Forms a temporary burrow, draws water in at the centre and out at the tips of the arms; current driven by cilia of cribriform organs on sides of arms; derives significant nutrition from dissolved organics. Extensive discussion on feeding by deep-sea organisms.