The Crinoids include about 625 living species of sea lilies and feather stars. Some have stalks and wave their feathery arms to catch fragments and work them towards their mouths with their tube feet and cilia. The feather stars walk on the tips of their arms, or swim by moving their arms alternately so that half are up and half down at any one time.

Related categories 1

ADW: Class Crinoidea
Photographs and information on the feather stars and sea lilies from the Animal Diversity Web.
Crinoid Creatures
Spectacular photographs and a brief article about modern crinoids.
Crinoidea
Extensive article about modern and ancient crinoids by William I. Ausich and Charles G. Messing for the Tree of Life project.
Crinoidea
Introduction, characteristics, phylogenetic relationships and evolution, from the Tree of Life Web Project.
Wikipedia: Crinoid
Encyclopedia article on the sea lilies or feather-stars.
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