Although southern sea otters ( Enhydra lutris nereis ) are not considered prey for white sharks ( Carcharodon carcharias ), sharks do nonetheless bite sea otters. We analyzed spatial and temporal trends in shark bites on sea otters in California, assessing the frequency of shark bite wounds in 1,870 carcasses collected since 1985. The proportion of stranded sea otters having shark bites has increased sharply since 2003, and wh...