1x8 - The Suite Life on Deck

The class has a school project to complete and Cody chooses Bailey to be his partner, disappointing Zack who had hoped to get Cody to complete his and Woody's project for them. After Bailey tells London that she has partnered with Cody, London teams up with Zack and Woody. Cody is trying to catch a famous sea monster, but keeps failing and disappointing Bailey. Zack tries to sabotage Cody's project. However, his own project turns into a monster when London pours a smoothie into their plant project, causing it to grow and eventually trapping Zack, Woody, and London. The sea monster shows up at the end of the episode.