The US extended its claims on the ocean floor by an area twice the size of California, securing rights to potentially resource-rich seabeds at a time when Washington is ramping up efforts to safeguard supplies of minerals key to future technologies.
UNCLOS has rules defining where the continental shelf boundary can be considered to extend to, so it’s probably wherever that line is (with carveouts for where it meets Russia and Canada’s equivalent claims). This type of claim is only for the sea bed, not the water column, so it hasn’t been economically viable to exploit in the past. That might be changing with the increased importance of rare earth metals
UNCLOS has rules defining where the continental shelf boundary can be considered to extend to, so it’s probably wherever that line is (with carveouts for where it meets Russia and Canada’s equivalent claims). This type of claim is only for the sea bed, not the water column, so it hasn’t been economically viable to exploit in the past. That might be changing with the increased importance of rare earth metals