Hōnaunau Bay, Hawaii on 25 January, 2020. Sea urchin populations are ballooning in the bay, putting the coral reef at risk, a new study has found.

Kāne'ohe Bay, where HIMB is located and the research was conducted, is abundant with small, isolated "patch reefs," which are teeming with undescribed sponge species as well as non-native species ...