The Marvelous Misadventures of Flapjack (2008)

S2E20 Under the Sea Monster

After Flapjack plays a prank on K'nuckles involving a sea monster, the residents of Stormalong decide to take action by tossing him into the ocean as punishment. With K'nuckles now stranded, Flapjack sets out on a mission to rescue his friend and bring him back to the harbor.