KEN CHRISTENSEN:

Cordell wants to see if coastal cities can better coexist with fish. For 80 years, Seattle's seawall was like most, a flat, concrete slab that held back the sea, but destroyed shallow water habitat that many species thrive on.

Every spring, young salmon would migrate from Seattle's Duwamish River to the ocean, and they're hard-wired to stay close to shore, which means they run right into this.

In the inky darkness under the pier, life can get confusing for a fish.