Jump on their heads.
The Hydra is a six headed beast on Poptropica.
you can't
you have to jump on all 5 of the hydra's heads and then click on the hydra and you will get the scale
When it tries to bite you, jump, and land on its head.
Defeat the hydra who is found in a cave in the bottom left of poseidon's water maze.
Move your mouse over the neck of the hydra and wait till it makes the pointing finger. Click
It's an underwater cave at Poseidon's "castle"
you dive down underwater and you go into a cave
Wait for the hydra to attack then jump on each of its heads tell they are all sleeping. Then click on the Hydra.
A hydra is a 7-headed creature that, whenever a head is cut off, 2 more grow back! Very deadly.
wait till it tries to bite you then quickly jump. you will land on its head and it will die. do this will all of the heads. you will get a hydra scale.
You jump on its heads and it will give you the scale.