As soon as the player can access the underwater areas, the superboss Emerald Weapon will be available to fight. Emerald Weapon is dangerous and will likely kill an unprepared party, especially when the party may first encounter it. Emerald Weapon often circulates the open area of the Bottom of the Sea near Junon, but it also can be found waiting in front of certain locations such as above the underwater crater or in front of the Gelnika; however, surfacing and re-submerging will cause it to move somewhere else. Emerald Weapon moves faster than the submarine and therefore surfacing may be easier than trying to move out the way if it is close.