On last week's visit to Harbin Hotsprings (in Middleton, CA) we got to swim in a body-temperature circular pool. We walked and swam in a circle long enough to make our own current and create a whirlpool. It felt so dreamy to let the current carry us along! Here's a short video, for premium members, of what that looked like - my naked body being carried along by the current.
It's against the rules to use cameras/electronics at Harbin, by the way. But no one else was around when we took this video...
