Ctenophora

**Definition:** Phylum of marine colenterates characterized by eight comb rows of fused cilia on the body surface. In contrast to CNIDARIA they lack stinging cells, but they are voracious predators and possess sticky cells (colloblasts) for capturing prey. Most species are transparent and many exhibit bioluminescence.

**Tree numbers:** - B01.050.500.325

**Synonyms:** - Comb Jellies - Sea Walnuts - Ctenophores