Sharks use mental 'sat-nav' maps to swim to locations 30 miles away

Sharks use an internal 'sat-nav' system to pinpoint destinations up to 30miles away, according to a study.

Read more: http://www.dailymail.co.uk/sciencetech/article-1362134/Sharks-navigation-Mental-sat-nav-maps-help-fish-swim-locations-30-miles-away.html#ixzz1FYtmLze7