I was walking through the Coral Square Mall today (in Coral Springs, FL) and saw this strange 'attraction'.  Basically...a kid or teen gets into an inflatable 'bubble' and is let loose in a shallow pool of water.  They can run, jump, roll...and they stay dry.  It actually looked kinda fun.  Reminded me of the hamster balls though.  Coral Square Mall is just north of Ft. Lauderdale in Coral Springs, FL.

You might have to adjust your volume a bit lower prior to hitting play.