Cnidarians

Cnidarians. This group includes numerous polyps - living creatures, reminiscent of a cup or glass, whose leg on something fixed, and in the midst of which the mouth, surrounded by burning tentacles. Polyps may be solitary, like sea anemones, or form large colonies. They can also be ball jellyfish forms, freely floating in the water column, and often two forms of combined fixed polyp, which multiply asexually, producing jellyfish, with sexual reproduction are obtained polyps.