article_snippet: A celebrated sea otter who survived a natural oil slick and was tracked by researchers for six years has been killed by a shark.
article_snippet: Wildlife biologists retrieved a large, serrated tooth fragment from white shark in a wound on the mother-of-three's body, indicating the cause of death.
article_snippet: Cause of death: Wildlife biologists retrieved a large, serrated tooth fragment (above) from white shark in a wound on the mother-of-three's body, indicating the cause of death .
article_snippet: A  rescue team from The Marine Mammal Center was dispatched to retrieve the oiled otter.
article_snippet: According to the California Department of Fish and Wildlife, shark bites are the leading cause of mortality of southern sea otters.