These protected areas bring an incredible amount of biodiversity right into the bustling metropolis–including coral reefs.

More extinction, but reef sharks in particular, with a global average decline of 63% in five main shark species living on coral reefs. Universal Images Group via Getty Images ...

A groundbreaking study of 7,000-year-old exposed coral reef fossils reveals how human fishing has transformed Caribbean reef ...

A global shark census found in 2018 that the population of five main reef shark species, which are key to balancing the ecosystem of coral reefs, had declined 63%.

Fossils from 7,000-year-old Caribbean reefs show a 75% drop in sharks and a rise in prey fish numbers and size.