Leviathan (Final Fantasy II)

The Leviathan is a monster that guards the sea approach to the Tower of Mysidia in Final Fantasy II. Firion and his allies are swallowed by the creature as they approach the tower. Inside, they are separated from Layla, but find Ricard, who had been missing from Dist. With Ricard's help, they make their way back up to Leviathan's mouth, where they find their ship, but a Roundworm attacks them. They defeat the Roundworm and board their ship again. When Leviathan opens its mouth again, the ship sails out and continues toward the tower.