On Thursday, President Trump signed an executive order that aims to permit, for the first time, industrial mining of the seabed for minerals. Scientists have expressed deep reservations that mining could irreversibly harm these deep-sea ecosystems before their value and workings are fully understood.

President Trump signed an executive order to boost the U.S. deep-sea mining industry for critical minerals. Supporters say deep-sea mining could boost the U.S. economy and reduce reliance on land-based mines, while environmental groups warn of biodiversity loss. The move comes amid U.S. efforts to decrease reliance on China for critical minerals.