Freshwater Hydra, Hydra sp.
Class: Hydrozoa, Order: Anthoathecata
England, UK
Freshwater hydra, often simply referred to as hydra, are small, freshwater animals belonging to the phylum Cnidaria. They are members of the genus Hydra and are commonly found in freshwater habitats such as ponds, lakes, and slow-moving streams. Here are some key points about freshwater hydra:
Hydra are simple organisms with a tubular body that typically ranges from a few millimeters to a few centimeters in length. They have a cylindrical body with a mouth surrounded by tentacles at one end. Hydra have radial symmetry, meaning they are symmetrical around a central axis. They lack organs and a true digestive system but possess specialized cells called cnidocytes that contain stinging nematocysts used for capturing prey.
Freshwater hydra are fascinating and ecologically important animals found in freshwater habitats worldwide. Despite their simple appearance, they possess remarkable biological features and have contributed significantly to our understanding of fundamental biological processes.
BW photo prints available.
