A recent story from Mexico may provide some clues. In 2006, a mysterious illness began to affect girls at a boarding school in Chalco, Mexico, near Mexico City. The school, which is run by Roman Catholic nuns, is one of 10 in Asia and Latin America operated by a charity called World Villages for Children in Asia.
There are also several marine mammals like Orca's (killer whales), harbor seals and sea lions that live in the Seattle area in the cold waters of Puget Sound and the Pacific Ocean and feed on the salmon and other fish. Douglas squirrels rely on the the evergreen trees that are native to the area.
Mammals of the Bay Area. You can see quite a few mammals in the San Francisco Bay Area, if you know what you are looking for. Many are found in protected areas like State Parks but some, like raccoons and skunks, are even found in suburban environments. Several marine mammals can be seen in the nearby coastal waters and the Harbor Seal can actually be seen in San Francisco Bay. A special whale-watching page will help you if you want to catch sight of these magnificent marine mammals. ...more . Land Mammals.