National jurisdiction over the seabed normally leaves off at 200 nautical miles (370 km) seaward from baselines running along the shore, unless a nation can demonstrate that its continental shelf is naturally prolonged beyond that limit, in which case it may claim up to 350 nautical miles (650 km). ISA has no role in determining this boundary. Rather, this task is left to another body established by UNCLOS, the Commission on the Limits of the Continental Shelf, which examines scientific data submitted by coastal states that claim a broader reach.