"Amendment 18 revises the description and identification of Essential Fish Habitat (EFH) for Pacific salmon, designates habitat areas of particular concern (HAPC), modifies the current information on fishing activities and potential measures to minimize their effects on EFH, and updates the list of fishing and non-fishing related activities that may adversely affect EFH and potential conservation and enhancement measures to minimize those effects. The action is consistent with the Pacific Coast Salmon Fishery Management Plan, the Magnuson-Stevens Act, and other applicable law. No significant impacts are anticipated"--Cover letter summary.