Cnidarians

Cnidarians are aquatic animals that are radially symmetrical. They have tentacles that encircle their mouth and a single opening where food and waste enter and leave. Most cnidarians are carnivorous and have a primitive nervous system which means they have a neural net. Two examples of scientific names are Bolinopsis infundibulum and Metridium giganteum. There are about 9,000 species of cnidarians in the world.

These are all different species of cnidarians.