What made us feel ill?

[JoelW]

You are probably getting a combination. Kicking up the silt will potentially cause a lose of vertical reference if you weren't near the bottom to tell what is up and down. Cold in the ear can really mess up the equilibrium. Below 75F I have to wear a hood or I get vertigo like you won't believe. I talked to a doc about it and his response was that my ears were doing what they are supposed to do when they get a shot of cold water. One is a more sensitive than the other so I get a bit out of kilter.

Joel