Contains cnidocyte or venomous cells that helps collect and transmit sensory information. Body symmetry is a jellyfish

Why Cnidara is my favorite phylum

The phylum cnidara is my favorite because jellyfish are cool creatures the way the move is so interesting to me and the powerful sting they can give you. There is a unside out jellyfish and those are very cool as well. Whats your favorite phylum?