Biol-Yasser Mohamed Posts - TopicsExpress

Sea anemones are a group of water-dwelling, predatory animals of
Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria. They are named for the anemone, a terrestrial flower. Sea anemo...

Hydra /ˈhaɪdrə/ is a genus of small, simple, fresh-water
Hydra /ˈhaɪdrə/ is a genus of small, simple, fresh-water animals that possess radial symmetry. Hydra are predatory animals belonging to the phylum ...