U.S. Geological Survey walrus researcher Chad Jay answers questions about walrus behavior in response to sparse summer sea ice on Wednesday, Nov. 14, 2012, at the USGS Alaska Science Ce

 

              U.S. Geological Survey walrus researcher Chad Jay answers questions about walrus behavior in response to sparse summer sea ice on Wednesday, Nov. 14, 2012, at the USGS Alaska Science Ce
U.S. Geological Survey walrus researcher Chad Jay answers questions about walrus behavior in response to sparse summer sea ice on Wednesday, Nov. 14, 2012, at the USGS Alaska Science Center in Anchorage, Alaska. Jay and other researchers use radio-tracking tags to record walrus movements in the Chukchi Sea and say the lack of sea ice over the continental shelf from September to October causes walrus to rest on shorelines and forage in nearshore areas. (AP Photo/Dan Joling)