another use (Score 1)

Imagine making a huge kelp bed of this stuff and placing it under the golden gate bridge. Harness the incredible tidal power under the bridge, while not threating wildlife (with spinning turbine blades) and because humans are taking so much fresh water out of the delta, the area of the bay consumed by saltwater has been advancing up the bay. If this flow were slowed down by use of a tidal generator, the salt water parts of the bay would receed back to their original areas.