Re: Swimming sightless, but never blindly...
I know of one case where underground caverns connect the ocean to an inland lake (not too big). The end effect is that despite being about 100 miles inland the lake is salt-water and has tides.
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The Sistine Chappel, Michelangelo's David, Beethoven's Fifth, Pun-Pun - artistic wonders for the ages.
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