U.S. marine biologists have trained a pair of sea lions to tag and photograph elusive whales as they cruise through the Pacific depths , New Scientist magazine reported on Thursday .
<response> <location>U.S.</location> marine biologists have trained a pair of sea lions to tag and photograph elusive whales as they cruise through the <location>Pacific</location> depths , <organization>New Scientist</organization> magazine reported on Thursday . </response>