Orcas are under threat from man-made noise pollution. These scientists are fighting to protect them.
(WorldNews Norway)

Experts are studying how man-made noise pollution, like from boats and oil drilling, is threatening the lives of orcas. One team of scientists is collecting hundreds of hours of orca recordings off the coast of Norway in an effort to make to region a marine protected area. Man-made noises interfere with orcas` communication, which they use for hunting and mating. And orcas trying to escape the underwater cacophonies may travel too far to the rocky shoreline, which can result in stranding and death. Visit Business Insider`s homepage for more stories. Orcas have a language of their own. They communicate through touch, movement, and most importantly, sound. And it`s marine scientist Ellyne...