Wednesday, May 5, 2010

Invertebrate- Echinoderms- Beaded Sea Star





Beaded sea star comes in a few different colours, such as; pink, pale purple, brown and yellow. The small white dot on the beaded sea stars front is the inlet to the water vascular system. Every echinoderm has one but it is usually a lot harder to see where as on the Beaded sea star it is rather easy find. The largest that these sea stars can grow up to is 6 inches but these are still pretty small. Underneath their feet they have a large number of small suction cups which are used to collect oxygen which they need in order to live. The Beaded sea star is declining in population due to humans polluting their water and the over harvesting of the Beaded sea stars food. If we don’t change our ways there is a big chance that these animals could become extinct.
I got my in formation from:
http://www.julianrocks.net/echinoderms/UniophoraGranifera.htm
http://www.poineerschooldistict.org/education/components/scrapbook/default.php?sectiondetailid=2913&PHPSESSID=c1cc889686cd2b1981c3aa4bfb0d2ff4

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