Sea Lions have cancer https://sanfrancisco.cbslocal.com/2021/01/31/decades-old-pollution-linked-cancer-california-sea-lions/ To date, almost 25 percent of the sea lions that first responders bring to the Marine Mammal Center in Sausalito have died from one aggressive cancer, among the highest prevalence of a single cancer type in any mammal, including humans.
Cysts, Neoplasms, lesions on the Liver and Kidneys, toxicity in water and sediments, mutations, chromosome damage, 100 percent mortality or 100 percent abnormal development. This is the result of Anthropogenic (man made) pollution in San Francisco Bay, due to the pollution and dumping of chemicals in the bay and on land where it spreads into the Bay.
AN EVALUATION OF THE EXTENT AND MAGNITUDE OF
BIOLOGICAL EFFECTS ASSOCIATED WITH CHEMICAL
CONTAMINANTS IN SAN FRANCISCO BAY, CALIFORNIA
NOAA Technical Memorandum NOS ORCA 64
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
Office of Ocean Resources Conservation and Assessment (ORCA), March 1992