article_snippet.sent: (CNN)Marine life seen swimming in unusual places.
article_snippet.sent: One is in the Bering Sea and the other is off the West Coast.
article_snippet.sent: New Scientist magazine cited fisherman and wildlife officials in Alaska who have seen skipjack tuna and thresher sharks.
article_snippet.sent: Pygmy killer whales have been spotted off the West Coast.
article_snippet.sent: I've never seen some of these species here before," Bill Peterson of the Northwest Fisheries Science Center in Seattle told New ScientistNew Scientist.