^ ^

So it is a curious thought how much of the sand on that pretty-looking Hawaiian white-sand beach actually came out of a parrotfish's digestive tract and how much of it is simply crushed shells and other material.

Hawaiian white sand beaches

For many people, powdery white-sand beaches are the ideal type of beach. White sand is mainly made up of calcareous, reef-derived material, such as crushed corals and shells. An example of a Hawaiian white-sand beach is Waimanalo Beach on Oahu.


www.to-hawaii.com/hawaiibeachsand.php