Noun
One of the Echinodermata.
Source: Webster's dictionaryThe creature displayed the qualities reminiscent of both coelenterate and echinoderm. A terrene nudibranch? A mollusc deprived of its shell? More importantly, was the creature edible? Jack Vance
The two halves each regenerate their missing organs over a period of several months but the missing genital organs are often very slow to develop. citation The larvae of some echinoderm species are capable of asexual reproduction. Source: Internet
This system varies between different classes of echinoderm but typically opens to the exterior through a sieve-like madreporite on the aboral (upper) surface of the animal. Source: Internet
Many can also swim with their arms but most are largely sedentary, seldom moving far from their chosen place of concealment. citation Feeding The modes of feeding vary greatly between the different echinoderm taxa. Source: Internet