Large reef sharks are put into tonic immobility by overstimulating the electrical sensors in their noses. | SHARK WEEK starts Sun Aug 10 8/7c on Discovery! | www.discovery.com/sharkweek | ZOMBIE SHARKS airs Wed Aug 13 9/8c on Discovery! Subscribe to Discovery! | www.youtube.com/subscription_center?add_user=discoverynetworks Join us on Facebook: www.facebook.com/sharkweek www.facebook.com/Discovery Follow on Twitter: twitter.com/SharkWeek twitter.com/Discovery