Damages the entire party with Acid Rain.
The Moonform, also known as Hipocampus, is an enemy in Final Fantasy VI.
They usually only use normal attacks and their special attack Mouth Clamp, which inflicts Sap. If attacked they have a 33% chance of countering with Flash Rain, and a 33% chance of countering with Acid Rain if the hit by magical damage. Fira spells are enough to defeat them, as they have relatively low HP at this point in the game.
1st Turn: Attack (66%) or Nothing (33%)
2nd Turn: Attack (66%) or Mouth Clamp (33%)
If attacked by "Magic": Acid Rain (33%)
If attacked by anything: Flash Rain (33%)
In the SNES version the enemy is known as Hipocampus. Hippocampus is a mythological Greek sea monster, and the scientific classification for seahorses.