The general shape of the echinoderm may be that of a star with arms extended from a central disk or with branched and feathery arms extended from a body often attached to a stalk, or it may be round to cylindrical.
The general shape of echinoderms may be that of a star with arms extended from a central disk or with branched or feathery extended from a body often attached to a stalk , or it may be round to a cylindrical.
