which classification is hydras
They have tube-like bodies and a numâ¦ber of tentacles that contain stinging cells called cnidocytes that they use to catch their prey. They have radial symmetry. Hydras are predatory animals belonging to the phylum Cnidaria and the class Hydrazoa. They are related to such things as jellyfish and coral. Specifically, THE Lernean Hydra was a serpent-like creature from Greek Mythology. It was an ancient water beast that possessed many heads and poisoned breath.