Dobbsey is floating in the water.

Dobbsey: Ah, nothing like relaxing in a simulated ocean.

A shark fin cuts through the water's surface. Dobbsey looks at it quizically.

Dobbsey: Very funny, Professor, but I'm already familiar with this joke.

Brainley floats into view. The shark fin is still there as well, and is clearly not attached to Brainley.

Brainley: What joke?

Dobbsey: Buh...wha...who...shark?

McMoosington bursts out of the water. He is wearing the shark fin on his head.

McMoosington: What? Sharks? Where?

Dobbsey: ....McMoosington, why are you wearing a shark fin on your head?

McMoosington: I'm wearing a what on my what now?