Monday, 8 October 2012
Sunday, 7 October 2012
It, is commonly called as, 'feather star'. It occurs in sea waters of the Atlantic, Western Africa , the mediterranean and west of Tropical America .It is an unstalked but attached crinoid, possessing a central cup-shaped disc which is covered by leathery skin. The oral surface is directed upwards.The branch dichotomously to form 10 arms and each of them bears a row of small and slender branches , called pinnules.The mouth radiate five ambulacral grooves which divide to form 10 grooves . The sides of each ambulacral groove are rows of finger like podia without suckers.The aboral surface bears numerous long, cylindrical appendages the cirri meant for gripping the substratum.