Splash and Bubbles - episode: 106H

The others are alarmed when they found out the reason Dunk is talking funny is that he has a parasite in his mouth. Dunk tells them that he doesn't want to get rid of the parasite and even thinks of it as a friend, but in truth, he is afraid to go see the cleaner shrimp. / Ripple hears a strange message traveling through the ocean and follows the voice all the way to a fin whale, who explains that the voice was a message from her brother thousands of miles away.