Movies: Dr. Austin Gallagher

Join a fearless team of shark experts using a 29-foot whale decoy to start a massive feeding frenzy to uncover dominant "Queen Boss" females....

Researchers brave a great white shark feeding frenzy inside a whale decoy....

In the Caribbean, a deep-sea camera captured footage of a 14-foot tiger shark suffering an assault by a large, unseen beast. It could be an unknown species of mega-shark or even a cannibalistic tiger shark. Dr. Austin Gallagher wants to find out....