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yesterday comment added Babika Babaka Thank you!! I didn't know about parrotfish. And I didn't know there already are beaches made of coral "bones" sand either. I'll probably accept your answer in a little while, I'll just wait a bit to see if someone else has something interesting to answer
yesterday comment added AlexP On the other hand, almost all natural sand is mostly silica...
yesterday history answered Kilisi CC BY-SA 4.0