On an average year, the Northcoast Marine Mammal Center rescues between 30 and 60 stranded marine mammals per year. The NMMC has rescued 732 marine mammals since 1988, and has rescued over 100 animals per year during 2009 and 2010. The most common patients at the Center have been California sea lions, which have accounted for 39% of all rescues between 1988 – 2009. Pacific harbor seals have been the second most commonly rescued marine mammal and account for 35% of rescues, followed by Northern elephant seals (23%). Other species that the Center has rescued include Northern fur seals, Steller sea lions, and Guadalupe fur seals. Steller sea lions and Guadalupe fur seals are both listed as “Threatened” under the Endangered Species Act (ESA) and Northern fur seals are designated as “Depleted” under the Marine Mammal Protection Act.