Moby Dollar is a dollar that swims in the sea in Sleepy Time. However, it is only seen in Mr. Krabs' dream. In it, Mr. Krabs catches Moby Dollar on his fishing pole, making it spit out coins. With the help of SpongeBob, the dollar is caught in his large wallet, but as SpongeBob congratulates him, the Moby Dollar escapes from the wallet, out of the boat, and into the sea again. Mr. Krabs eventually punishes SpongeBob by blasting him out of his dream.
- Moby Dollar is a parody of Moby Dick.