Harbor seals were hunted from the 1870s to 1970s until they were protected in the United States by the 1972 Marine Mammal Protection Act and in Canada under the 1970 Marine Mammal Regulations in the Fisheries Act. The inland Washington harbor seal stock is estimated to be over 12,000, while the Strait of Georgia sustains approximately 39,000 harbor seals. Key threats include
Status and trends for harbor seals in the Salish Sea
Harbor seals Encyclopedia of Puget Sound
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Data on the diets of Salish Sea harbour seals from DNA
Harbor Seal NOAA Fisheries
Harbor Seal NOAA Fisheries
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Status and trends for harbor seals in the Salish Sea
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Harbor seals Encyclopedia of Puget Sound