Study Finds Beaked Whales' Tusks Evolved Through Sexual Selection Process

(PhysOrg.com) -- For years, scientists have wondered why only males of the rarely seen family of beaked whales have “tusks,” since they are squid-eaters and in many of the species, these elaborately modified teeth seem to actually interfere with feeding.

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<p><a href="http://www.physorg.com/news148319331.html">Study Finds Beaked Whales' Tusks Evolved Through Sexual Selection Process</a></p> <p>(PhysOrg.com) -- For years, scientists have wondered why only males of the rarely seen family of beaked whales have “tusks,” since they are squid-eaters and in many of the species, these elaborately modified teeth seem to actually interfere with feeding.</p>