In-game appearance (all three)
Health Low (separate)
Location Luna Sea
The Hydra (ハイドラ) is a monster consisting of three moray eels in The Ocean Hunter. He is the only sub boss in Luna Sea.

The Ocean HunterEdit

Before reaching the underwater ruins where the Leviathan is rumored to roam, a diver towing a treasure chest warns Torel and Chris of the danger ahead ("Danger here!"). Shortly after, the two adventurers are attacked by the aforementioned danger in the form of Hydra.


Sunburst Area/Vulnerable Area: Entire body
Sweet Spot/Weakpoint: Mouth (open)

After the player(s) is introduced to (the) Hydra(s), the player(s) will begin to rotate between the three eels, which will attempt to bite the player(s). The player(s) must continuously fire at (the) Hydra(s) to rotate to the next one, and vice versa. (The) Hydra(s) will be defeated once the player(s) have depleted (their) health.


Hydra, also known as Lernaean Hydra or Hydra of Lerna, refers to the nine-headed aquatic serpent from Greek mythology. The monster haunts the swamps of Lerna and is reputed to have guarded the entrance to the Underworld. It had poisonous blood and blood so virulent that even its scent was deadly, and if one of its heads was cut off, it would be replaced by two more heads. The Hydra was killed by Hercules as one of his twelve labors and the method of killing it varies on different versions of the myth.


  1. GameFAQs, The Ocean Hunter