Number of Starving Sea Lions in California 'Unprecedented'
More than 3,000 starving sea lion pups have washed up on California’s beaches since January—easily 15 times more than in a normal year.
“It’s unprecedented,” says Sarah Wilkin, national marine mammal stranding and emergency response coordinator for the National Oceanic and Atmospheric Administration.
And those are the lucky pups. The situation on California’s Channel Islands, where more than 90 percent of the U.S. sea lion population congregates to breed and nurse young, is even worse than in other parts of the state.
The influx of weak, sickly pups—3,110 as of May 20—has overwhelmed rehabilitation centers for the third year in a row. From San Diego to north of San Francisco, rescuers are busy retrieving pups (sometimes from city streets and oceanside bars), fattening up the ones that can be saved, and releasing them back into the sea [see video]. During the worst month, March, more than 1,000 pups rolled ashore, more than rescuers would normally see in an entire year.
Scientists blame this year’s stranding on a lack of food for the pups, courtesy of a warm water blob that has settled off the West Coast. But the reasons for the two previous mass stranding events, in 2013 and 2014, aren’t yet obvious. (See "Warming Pacific Makes for Increasingly Weird Ocean Life."
http://news.nationalgeographic.com/2015/06/150605-sea-lion-deaths-stranding-california-ocean-animal-science/
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