Are beaches naturally sandy?

The sand found on a specific beach is created by its surroundings. It's unique to that beach—like a fingerprint. Most beaches get their sand from rocks on land. Over time, rain, ice, wind, heat, cold, and even plants and animals break rock into smaller pieces.



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A beach is the sandy, pebbly, or rocky shore of a body of water. Beach types vary widely, especially depending on where they are.

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Almost half of the world's sandy beaches will have retreated significantly by the end of the century as a result of climate-driven coastal flooding and human interference, according to new research.

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Whitehaven Beach, Whitsunday Island, Australia Whitehaven Beach is consistently ranked as the world's best beach, and with good reason: It's almost surreally beautiful. Besides its crystal clear waters, it's known for its white sand, consisting of 98% pure silica which gives it a bright white color.

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Along the way, sand is washed ashore, temporarily resting on beaches, until it is re-suspended in the ocean by wave action or wind. The one-way journey down the coast ends when sand is blown inland forming sand dunes, or more commonly, when it flows into a submarine canyon.

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To protect themselves, ghost shrimp burrow deep into the sand, about four feet down. They use their legs to pull in ocean water so they can feast on plankton, then push or flick the water back up and out of the hole to keep their burrow clean—hence the surrounding “sprinkles.”

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Fair-weather wind and wave activity will eventually carry the eroded sand back to the beach. Beach recovery takes months or years, though, because the lower energy waves don't carry as much sediment.

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