Most of the riverside commercial activities are at the head of the estuary at Gweek, once a trading port serving Helston and the surrounding area. A commercial drilling rig company and a thriving boat yard carry on the maritime tradition even though access is only possible at high tide. The National Seal Sanctuary is a popular tourist attraction, operating as a home and hospital for seals and other marine animals rescued from the surrounding seas.

Gweek Boatyard