The study is published in the journal Science Advances. In Greek mythology, the Hydra is a monster slain by Heracles, with each of its nine heads regrowing as soon as it is cut off. But the hydra is ...

In mythology, the hydra was a monstrous serpent with many heads that was slain by Hercules. Lake Hydra will be more welcoming: "We want this to be a place where people can have fun and learn ...