We got to see how rapidly the tide comes in by watching a narrow strip of sand between some rocks on shore and the waves coming from the Bay. It took less than 10 minutes for the little sandpath (about two feet wide) to be covered in water and impossible to walk without getting a shoe full of water. While we were down on the beach, a ranger explained about the lunar and solar influences on these huge tides. When the moon is new or ¾ , it is in the right alignment with the sun so that 70 to 100% of the pull of gravity from each is exerted. When the moon is full or at ¼ , the sun pits its 30% against the moon ’ s 70% so you get lower high tides.
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