Fish hatcheries are a critical part of the effort to restore salmon runs in the Pacific Northwest. But hatchery fish are less likely than wild ones to return from the ocean to spawn—and one reason may be hatchery noise.
Fish hatcheries are a critical part of the effort to restore salmon runs in the Pacific Northwest. But hatchery fish are less likely than wild ones to return from the ocean to spawn—and one reason may be hatchery noise.
