swimmate means A person or animal with which one swims. Lexicurio rates it Sui generis — a strength score of 100 out of 100.
Etymology
From swim + -mate.
noun
- A person or animal with which one swims.“As they ready for the big splash, Claudia [Kolb] speaks for her Olympic swimmates when she says, “I’ve learned much more than just being able to win. I can accept challenges and I can accept defeats. It’s all a part of the game.””