Final Fantasy III Checklist

Underwater

Optional areas available after completing Cave of the Circle.

Sunken Cave

Does not have a boss.

xDive underwater next to the triangle-shaped island at the far southeast corner of the map.

Saronia Catacombs

wStealing from the boss here is the only reliable way of getting the weapon Gungnir in the game, and requires a Thief of job level 71 or higher.

xDive underwater where the sea meets Saronia's wall, and enter the underground cave.