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.
The Hydra was of enormous size, with eight mortal heads, and a ninth one in the middle that was immortal. With Iolaos (Iolaus) driving, Herakles rode a chariot to Lerna, and there, stopping the horses, he found the Hydra on a ridge beside the springs of Amymone where she nested.