Is it possible to call a Tiger Shark to the camera for a close up? Producer George C. Schellenger takes a look in this behind the scenes segment from Sharks: Knights of the Sea. For more on sharks, check out www.captainjon.com, www.statusadventures.com and www.sharktaskforce.com

Jim Abernethy from Jim Abernethy Scuba Adventures shares his first encounter with a Tiger Shark - his fast reaction - and the way he sees sharks today. For more on sharks, check out www.captainjon.com or www.sharktaskforce.com.

Naturalist Scott Davis from Shark Diving International, explains why it's not easy being a shark. He also takes a look at some of the biggest threats to sharks -- and asks the question - "have sharks changed much?" Scott has worked with National Geographic - and led groundbreaking research into Great White Shark migration habits. For more on sharks and the ocean - check out www.captainjon.com.