As a member of the Phylum, Cnidaria, hydra arose early during metazoan evolution before divergence of the protosome and deuterostome branches. Its body plan is organized as a gastric tube with a mouth ...

Researchers identify redundant neural networks in jellyfish-like, freshwater hydra. The work is a step toward modeling how internal states and external stimuli shape the behavior of an organism with a ...

In the freshwater polyp Hydra vulgaris, a single population of stem cells is responsible for both gamete production and the sea anemone’s impressive regenerative abilities. However, this productive ...