The holothurian of our coast, excelling all the rest in beauty, is the Cuvieria.
The perforation so formed, becomes the micropyle of the holothurian egg, which was first discovered by Joh.
Any of various echinoderms of the class Holothuroidea, characterized by elongated bodies with tentacles around the mouth and five rows of tube feet. Holothurians are softer than other echinoderms because they lack spines and the skeleton is greatly reduced. Holothurians can extrude their internal organs to distract predators and grow a new set within a few weeks. Also called sea cucumber.