Hydra

The Hydra is a 5-headed monster in Mythology Island. Its scale is one of the Five Sacred Items

Role in Mythology Island
The Hydra is located in the Hydra's Cave,which is an underwater air pocket in the Realm Of Poseidon.To get there you must swim through an underwater cave.When battling,one of its heads will rear back and plunge down towards you. When that happens, jump and land on it.This will knock it out. There are 5 heads and you must make sure all of them are knocked out. After that click on it to retrieve its scale.

Trivia

 * In Greek Mythology, the Hydra is supposed to have 9 heads and it lived in a swamp.
 * It has purple forked tongues.
 * It is similar to Cerberus in a few ways.Both are found in Mythology Island,both have more than 1 head and both have to be put to sleep in order to obtain an item from their respective bodies.