Ctenophore

Ctenophores (Ctenophora) is a phylum of animals that are commonly called "comb jellies", "sea gooseberries", "sea walnuts", or "Venus's girdles" and are voracious marine predators. The word is pronounced ten-oh-for and comes from the Greek for "comb-bearers".

Ctenophores are vaguely similar in appearance to jellyfish, have eight "comb rows" of fused cilia that are arranged laterally along the sides of the animal and used primarily for locomotion. Many ctenophores have two long tentacles[?], but some lack tentacles completely. There are about 100 modern species of these marine animals. Due to their soft and fragile bodies, the fossil record for comb jellies is poor. A possible Ctenophore is known from the Middle Cambrian.

External link
Introduction to Ctenophora (http://www.ucmp.berkeley.edu/cnidaria/ctenophora)