To protect the reef in the Western Carribean Sea from the destructive and invasive Lionfish (which have no natural predators in these foreign waters and are killing native fish species), diver Jason Dimitri was on assignment culling lion fish when a Caribbean Reef Shark suddenly appeared. Jason said he was about 70 ft underwater and captured the harrowing experience on his GoPro.
 
For more information on the Lionfish impact on the Caribbean Sea and native fish populations, please see:

– TerraViva United Nations: Predatory Lionfish Decimating Caribbean Reefs
– ScienceDaily: Caribbean’s native predators unable to stop aggressive lionfish population growth
– Scientific American: As Lionfish Invade the Caribbean and Gulf of Mexico, Conservationists Say Eat Up
– World Resources Institute: Lionfish Invasion Threatens Coral Reefs in the Atlantic and Caribbean