Killer Whales and Sonar Tracking - BBC
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
Uploaded:2011/11/09 10:49:32
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Video Source: youtube.com