Zoanthids (order Zoantharia also called Zoanthidea or Zoanthiniaria) are an order of cnidarians commonly found in coral reefs, the deep sea and many other marine environments around the world. These animals come in a variety of different colonizing formations and in numerous colors. They can be found as individual polyps, attached by a fleshy stol...
• (n. pl.) Same as Anthozoa.
(from the article `cnidarian`) ...tentacles (oral and marginal) that form feltlike tubes of specialized cnidae (ptychocysts) and burrow in soft sediments. Shallow waters ...
Zo`an·tha'ri·a noun plural [ New Latin ] (Zoology) Same as Anthozoa . 
Zoantharia is an order of Anthozoa. They have simple tentacles occurring in multiples of six.