Headcanon
You're afraid of going back into the water, if you stay too long, you'll change into more of a seadweller. The longer you stay in the water, you receive more gills and the best gills.
You have small fins mounted on each side of your head, but when excited, they expand. They grow and stretch about two inches longer. It's embarrassing sometimes.
If you don't get what you want, you will attempt to do almost anything for it. For example, if you didn't get that much Halloween candy, you'd mug some wiggler for their candy.