Most of our parrot-fish species here in Hawai‘i are called “uhu,” but one species has a totally different Hawaiian name. Uhu feed mostly on coral, biting off chunks then digesting the soft coral ...

Parrot grind up coral during feeding and, after digesting the edible content, excrete the rest as sand, which can then be used in island building. Disclaimer: AAAS and EurekAlert! are not responsible ...