A swarm of male white tip sharks attack a single exhausted female shark in one of the most violent courtships in the animal kingdom. From Shark Mountain, airing on the NATURE series, July 29th at 8 p.m. (ET) on PBS (check local listings). The film takes viewers to Cocos Island in the Pacific, where sharks of all kinds converge in staggering numbers. <br /><br />For more information, visit <a class="link" rel="nofollow" href="http://www.pbs.org/nature">http://www.pbs.org/nature</a>
