For more brilliant natural history shows, exclusive to YouTube, head over to our brandnew channel Earth Unplugged! / earthunplugged
The competition between the fishermen and the killer whales heats up as the tuna migrate from the Med to the Atlantic ocean... 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: / bbcearth
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