1. Muppet Treasure Island Happy Meal toys
2. Li'l Miss Mermaid
3. Wind-Up Scuba Diver
4. Hello Kitty: Hello Color
6. Shimmers
7. Sea Wees
8. My Little Pony: Sea Ponies
Honestly, My Little Ponies made perfect bathtub toys -- they were all plastic and already had vague dirty water smell. But Sea Ponies came with boat clamshells. PRETTY BOAT CLAMSHELLS!
9. Street Sharks
10. Fountain Mermaid Barbie
11. Fisher-Price's Little People
Outside of their rich cousins the Playmobils, nobody lived better in the '80s than Fisher-Price's Little People. Not only were these toys already water friendly, but they came with a whole world built to be played with in water.
I mean, look at the yacht!