the hydra is in a underground cave near Poseidon's statue.
after defeting hydra he is on the right of that
Defeat the hydra who is found in a cave in the bottom left of poseidon's water maze.
It's an underwater cave at Poseidon's "castle"
in the underground cavern near Poseidon's statue
No Zeus did not kill Poseidon in Greek myth.
In the realm of Poseidon is a beach and what should be a sea, but resembles a lake. The maze and the Hydra cave are below the surface, along with Poseidon's throne room.
when you kill hydra while coming to flaconreach you get the sword
In a cave at the bottom left of Poseidon's water maze.
you have to do the quest or kill the monsters around hydra lake
A mythical 5-headed monster. It guarded a cave of Poseidon, in the Underwater Realm.
Hydra