In ancient Greek myth, the Hydra was a multi-headed monster that grew two more heads for every one that it lost. As it turns out, the real-life animal named after this mythical beast may be even more ...

An ancient marble altar showing a nude warrior battling a serpent monster has been discovered by villagers near the Akçay River in Turkey. Archaeologists said the altar likely dates to the second ...

Like the ocean, it seems that many bodies of freshwater are dark and full of terrors. For example hydra, an invertebrate freshwater creature that measures less than an inch long, is bizarre with the ...