Environmental issues in Puget Sound, Oyster, Salmon, Clam, Herring, Trout, Yellow perch, Superfund, Puget Sound Regional Council, Hood Canal, Zostera, United States Fish and Wildlife Service, National Oceanic and Atmospheric Administration, Hydroelectricity, Overfishing, Marine Protected Area, Oil spill, Puget Sound, Ocean, Freshwater, Ecosystem, Environmental health, Channel (geography), Inlet, Estuary, Headlands and bays, Island