India, Oct. 28 -- A viral video capturing a close encounter off Tybee Island, Georgia, has highlighted the unpredictable nature of marine wildlife. It shows a great white shark suddenly thrashing and snapping at a woman's hand after she leaned from the edge of a boat to pet it.

The clip was shared by Jimmy Lee Armel of the Knot Lucky Fishing, a Savannah-based nonprofit. It takes veterans, service members and their families out on fishing trips.

"She reached out to pet a great white shark. The great white had other plans," Armel, a former Ranger who founded the organisation, wrote on Facebook. He later said the video was recorded during a shark-tagging trip.

During shark tagging, the predators are caught, tagged, and then released back ...