the little wiggly pond hydra appear to be immortal. Belonging to the phylum Cnidaria, hydra are part of a group of organisms known as cnidarians which include jellyfish and sea anemones.

Hydra are members of a family of radially symmetric animals (Cnidaria), all of which use specialized cnidocytes to catch prey. This family also includes well-known creatures such as jellyfish and ...

This unsettling creature is a hydra, a freshwater-dwelling cnidarian no more than a half-inch long that eats mostly insect larvae and crustaceans. A hydra’s appearance and eating habits alone ...

Hydra are inch-long freshwater creatures that resemble a floating tube with a grasping appendage at one end and a cluster of tentacles at the other. They belong to the phylum Cnidaria ...

The discovery of the hitherto unknown protein in the freshwater polyp Hydra suggests that the molecular mechanism of elasticity could have originated in the cnidarians and evolved to discharge a ...

The tiny freshwater hydra has no eyes but it will contract ... “This is conclusive evidence that these animals, the Cnidaria, have light sensitivity based on this kind of opsin and transduction ...

Hydra are simple animals that, along with jellyfish, belong to the phylum cnidaria. Cnidarians first emerged 600 million years ago. "We determined which genetic 'gateway,' or ion channel ...

Hydra are members of a family of radially symmetric animals (Cnidaria), all of which use specialized cnidocytes to catch prey. This family also includes well-known creatures such as jellyfish and ...