Starving sea lion pups wash up on California's beaches
30 March 2013 Last updated at 18:28 GMT
Efforts are being made to find out why hundreds of starving sea lion pups are washing up on the beaches of California.
Almost 1,000 have been rescued in the past three months alone, and scientists say as many as 45% of the pups in the breeding grounds off the coast have died.
Peter Bowes reports from Los Angeles.