Left Fin

Sin's Left Fin is a boss in Final Fantasy X. This battle takes place during the fight to get inside Sin, and is the first of a series of boss fights. Like the battle against Evrae, the player is on the Airship and can fly in and out of range of physical attacks. Sin will not attack when the player is out of range. In short range, it uses Negation, a Dispel-like attack that dispels all positive status buffs, as a counter to many "Skill"-type attacks. It also uses Gravija, and can attack the entire party for approximately 1,000 damage.