A Watersuit is a commonly used suit in the show allowing fish to go out of water still hydrated.
- The appearance of the watersuits were changed in "Baldwin the Super Fish". They were then smaller in size.
- A big watersuit was used on a car in the game on the Fish Hooks website, "FishCoaster". It was also used with a similiar look in "Tank Bounce".
- Strangely, despite being released after the episodes with the new look, the games used the old look of the watersuits (however a small change was in "Tank Bounce").
- "Fish Out of Water" (First appearance)
- "Baldwin the Super Fish"
- "Hooray for Hamsterwood"
- "Milo Gets a Ninja"
- "Flying Fish"
- "Peopleing" (Mentioned only)
- "Legend of the Earth Troll"
- "Pamela Hamster Returns"
- "We've Got Fish Spirit"