Environment
Quiet, please: Hatchery salmon raised amid noise are less likely to return to spawn
Key Points
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.