Attracted by large pieces of tuna hanging from a rope, a great white shark has introduced an anti-shark cage occupied by a diver off Guadalupe, Mexico a volcanic island in the Pacific Ocean. For twenty seconds, the shark was panicked violently struggled to finally succeed to get out of the cage, the latter having been quickly opened by a member of the crew of the boat. The diver could then return to the boat safely. An experience he is probably not soon forget!