The Plancti, also known as Planktae, is an enemy from Final Fantasy III. It can be found at the Lake Dohr, which becomes an unrevisitable location once Leviathan is defeated and after the player leaves the area. This makes it is a missable enemy for the Bestiary, though it can be easily encountered throughout the entire dungeon.
Plankton (sing. plankter) are waterborne microbes spanning all categories of life on Earth, and are important food sources for larger organisms.