For a girl diving in on the side in a good way

"Hang ten honey"

 ~ http://www.yessaid.com/lyrics/1999tovenusandback/thewaitress.html

"Ballerinas that have fins that you'll never find"

~ http://www.yessaid.com/lyrics/1998fromthechoirgirlhotel/01spark.html

~~~~~

We can also use the pool to practice little ballet movements and chat with nice people in locker rooms. Everybody loves the pool...

http://www.yessaid.com/lyrics/1992littleearthquakes/thepool.html