Swimming Riddles

Wash it and it isn't clean. Don't wash it and then it's clean. What I Am?
Answer Water
24
What does a fish swimming in the water say when it strikes against a wall?
Answer Oh dam!
16
I am the biggest alphabet, as I contain the most water in the world. Who am I?
Answer Alphabet 'C'
16
If you were swimming in the ocean and a big alligator attacked you, what should you do?
Answer Nothing. Alligators do not live in the ocean
13
What kind of exercises are best for a swimmer?
Answer Pool-ups (Pull-ups)
10
Why can male elephants always get into the swimming pool?
Answer They always have their trunks
10
Why did the teacher jump into the swimming pool?
Answer The teacher wanted to test the water
9
What happens thrice in weightlifting, twice in swimming, but only once in tennis?
Answer The letter 'i'
9