The practice of deep-sea mining involves using heavy machinery to remove minerals and metals from the seabed, where they build up into potato-sized nodules.

Donald Trump has signed a controversial executive order aimed at stepping up deep-sea mining within US and in international waters.Thursday's order is the latest issued by the US president to try to increase America's access to minerals used by the aerospace,

President Donald Trump is trying to fast track a brand new, highly controversial industry – mining critical minerals in the deep sea.