Killer Whales and Sonar Tracking | BBC Earth
15 years ago
Once upon a time, the killer whales out-fished the fishermen. With the advent of sonar, the tables were turned but now interesting developments are afoot. Visit http://www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here: http://www.youtube.com/bbcearth This is a commercial channel from BBC Studios. Service & Feedback https://www.bbcstudios.com/contact/contact-us/