I never heard of the glass thing. But I know this: Even in the clearest water, below about 150', you wouldn't be able to see jack. Not enough light. Even in shallow water, any turbulence or particulate matter in the water and forget it. "Hold it, skipper! There's a - " CRUUUNNNNCCHHHHH!!!!
I'm thinking that's a myth.
Mylander
__________________
Periscope depth... Up Scope...
|