Source: The San Tan Valley, AZ weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency).
A hydra is a small multicellular organism in the genus of the same name. These tiny animals are found in fresh water all over the world, and they have a number of distinctive traits that make them interesting to scientists.
Hydra oligactis is easily distinguished from other hydra by its very long tentacles, which may extend to 2 inches (5 cm) or more when relaxed. The column is a pale translucent brown, 0.6 to 1 inch (15 to 25 mm) in length, with the base distinctly narrowed to form a stem or foot..