La mayor parte de los granos de arena de muchas playas blancas en zonas tropicales, como es el caso de Hawái, son caca de pez loro, fruto de restos de coral.

Vota!

Fuentes

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Marcus, M. A., Amini, S., Stifler, C. A., Sun, C. Y., Tamura, N., Bechtel, H. A., ... & Gilbert, P. U. (2017). Parrotfish teeth: stiff biominerals whose microstructure makes them tough and abrasion-resistant to bite stony corals. ACS nano, 11(12), 11856-11865. https://pubs.acs.org/doi/abs/10.1021/acsnano.7b05044 2-

DANA DOVEY. "Where Does Sand Come From? Parrotfish Poop Makes White Beaches and Now Scientists Know How". Newsweel, 16 de noviembre de 2017 https://www.newsweek.com/where-does-sand-come-parrotfish-poop-makes-white-beaches-and-now-scientists-714024