Game:Flotsam and Jetsam

Flotsam and Jetsam are bosses from  that appear in Atlantica. They fight as a pair, aiding Ursula in her first form.

Kingdom Hearts
Flotsam and Jetsam swim around Ursula's lair, attacking Sora periodically. As the main focus is to cast spells on the cauldron and attack Ursula, the eels should be ignored. Flotsam and Jetsam revive periodically after being knocked out, so be sure to keep them at bay. Allow the party members, preferably Ariel and Goofy to take care of them while Sora focuses on Ursula. Or, if they are still posing a threat, Sora can take them out himself, but should do so at a safe distance from Ursula. Attack the eels to restore MP, if running low.

Kingdom Hearts II
During the song Ursula's Revenge, Flotsam and Jetsam briefly appear, but both are destroyed by Magic from Sora's Keyblade.