Fish eat corals emitting 400kg of sand every year

Thanks to possessing particularly strong teeth, grouper can easily crush hard corals.

Images of grouper, also called, crushed coral and discharged white sand into the lens of natural documentary filmmakers, Independent on November 16 reported. A grouper can produce about 400kg of sand each year.

This fish crushes coral thanks to its distinctive teeth that look like parrots. The hardness of the teeth used for coral biting is equivalent to 530 tons of pressure, about 88 African elephants, each 6.45cm ² .

Sharks are the best biological mineral.

"This fish bites reefs every day and emits most of the white sand on the beach," said Matthew Marcus, a Berkeley Lab researcher. He studied the tooth structure of this fish to find out what causes them to bite such hard coral chips.

Marcus and his colleagues used X-rays and discovered special structures with fluorapatite crystals , a mineral, intertwined. "Catfish is the most amazing biological mineral. They are the most rigid, best scratched and broken," said Professor Pupa Gilbert, a physicist at the University of Wisconsin-Madison. .

Professor Gilbert suggests, humans can rely on this structure to make new artificial materials more durable. This type of material will be very useful when making machinery parts, especially those that are constantly under great pressure.