feather star


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feather star,

common name of a class of echinoderms that, as juveniles, are attached to the sea bottom by a stalk with rootlike branches; the mouth side faces upward. In the adult stage they break away from the stalk and move about freely. Feather stars have water-vascular (ambulacral) systems, similar to those in other echinoderms, that extend into the branched arms on the body, or crown. Some can swim by undulating movements of the arms. Feather stars creep about by means of projections at the base of the crown, called cirri, which can grasp bottom objects. They are marine animals, like all echinoderms, and are widely distributed. They are most common in relatively shallow, warm waters, but some live in cold water and a number of species occur in the ocean depths. Like other members of this class, feather stars may form extremely abundant local aggregations. Feather stars are classified in the phylum EchinodermataEchinodermata
[Gr.,=spiny skin], phylum of exclusively marine bottom-dwelling invertebrates having external skeletons of calcareous plates just beneath the skin. The plates may be solidly fused together, as in sea urchins, loosely articulated to facilitate movement, as in sea
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, class Crinoidea.
References in periodicals archive ?
Birds of a Feather star Lesley Joseph has been lined up to headline this year's New Theatre pantomime Snow White & the Seven Dwarfs.
Satisfied customers include Ready, Steady, Cook chef James Martin (who regularly appears at events on behalf of Underwood), Birds of a Feather star Lesley Joseph and actor Anthony Andrews.
Meanwhile, Birds Of A Feather star Linda Robson revealed that she fought for the same pay as the male stars of Only Fools And Horses - and won.
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Over the course of the next few week, DJ Tony Blackburn, former Eternal singer, Kelle Bryan, multi MOBO award-winning performer Fazer aka Richard Rawson, Birds of a Feather star Lesley Joseph, Coronation Street actress Wendi Peters, and Paralympic gold medalist Lee Pearson will all be trying their hand at herding.
BIRDS of a Feather star Linda Robson yesterday joined 5,000 protesters who marched on a police station over the death of a teenager in a police chase.
BIRDS of a Feather star Linda Robson feels responsible for the death of teenage stabbing victim Ben Kinsella as she helped get him a fake ID.
In this episode, Birds of a Feather star Linda Robson lands in Japan, where only 3% of people are obese and they live longer, healthier lives than anyone else in the world.
BIRDS Of A Feather star Linda Robson today made an emotional appeal for tougher penalties for carrying knives after the death of teenager Ben Kinsella over the weekend.
THE teenage son of Birds Of A Feather star Linda Robson cradled a stabbed schoolboy as he lay dying.
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