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feather star


feather star
Photo Information
Copyright: Czaldy Garrote (Muscovado) Silver Note Writer [C: 6 W: 0 N: 16] (119)
Genre: Animals
Medium: Color
Date Taken: 2006-10-21
Categories: Echinoderms
Camera: Olympus SP310
Exposure: f/2.8, 1/80 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2006-11-07 7:36
Viewed: 5203
Points: 2
[Note Guidelines] Photographer's Note
Feather stars also known as crinoids. They are characterized by radial symmetry. The body of a typical feather star is cup-shaped, their numerous feathery arms project from a central disc. Some have five arms, others as many as 200. The arms, called pinnules are coated with a sticky substance that helps to catch food. There are appendages known as cirri attached to the underside of the body with which they cling to to sponges or corals. Both their mouth and their anus are situated on the upper side.

They are primarily nocturnal but are seen in the open during the day with their arms rolled up. It can crawl, roll, walk and even swim but usually they cling to sponges or corals. Feather stars are very abundant in areas exposed to periodic strong currents, because they feed on plaktonic food.

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Critiques [Translate]

very interesting I thought it was a plant leaf so your notes were useful. I like the dark light and subdued colours though it may be interesting to alter the contrast and colour cast.

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