Both off-topic and on-topic!

The off-topic part: The Airswimmers themselves. Helium-filled remote control flying fish toys. They currently have two models, a shark and a clownfish. They are fun in and of themselves, so much so I'm tempted to buy one for my own amusement. :-D

The on-topic part: Watch the video produced by the company that makes the toys. There's a part where there's a roomful of young children having an undersea theme party, and they're all dressed in swimsuits. In "swim"/fly a clownfish and a shark. It's fun watching the kids' reactions, and all the more fun because of the way the little girls are dressed.

Enjoy!

http://www.youtube.com/watch?v=vIJINiK9azc