Hi all, the other day I was in a thermal bath where they had some whirlpool jets at the bottom of a basin about breast-deep. I was standing right over the jets, and the turbulence in the water was so strong at the surface, that I couldn't stand straight but was forced to sway back and forth and was almost washed away from the position of the jets. I probed the ground with my toes and expected the position of the outlets to be easily detectable by a sharp vertical jet of water. But nothing! Next, I located the outlets by eye (there were maybe 5 or 6 of them, of ~1/4 inch diameter each), and put my toe on one. There was almost nothing to be felt, and I could easily block the jet with my toe. Forces seem to be large only when close to the surface, and very small deeper down. Any physical explanation of this?