There are only two cruise ships in the world that have an aqua theatre, luckily I work on one of them. I took this picture the other day of a good friend that is a synchronized swimmer on board the ship we work on. I literally dangled over the edge of a three meter diving board as she swam below me. She had a dress she didn't mind wearing in the water so I was able to capture some sort of mermaid-esque style. I kept a low f-stop and high shutter speed to capture the movement of the water as she floated on the surface. I think the end result came out pretty nice!
85mm · f/5.0 · 1/800s · ISO 320