The shark manages to crash right through the bars and thrashes around inside the cage while the panicked crew works to open the top and free the predator, which is trapped in the cage with a human diver.
The shark, which has blood coming from its mouth, is able to exit the cage through the open top, and a few seconds later the diver also emerges unharmed.
"My heart is going," the diver can be heard saying as he returns to safety.
"What might appear to be an aggressive great white shark trying to attack the cage, this is not the case," the uploader wrote on YouTube.
"These awesome sharks are biting at large chunks of tuna tied to a rope. When a great white shark lunges and bites something, it is temporarily blinded. They also cannot swim backwards. So this shark lunged at the bait, accidentally hit the side of the cage, was most likely confused and not able to swim backwards, it thrust forward and broke the metal rail of the cage. There was a single diver inside the cage. He ended up outside the bottom of the cage, looking down on two great white sharks. The diver is a very experienced dive instructor, remained calm, and when the shark thrashed back outside the cage, the diver calmly swam back up and climbed out completely uninjured. The boat crew did an outstanding job, lifting the top of the cage, analyzing the frenzied situation, and the shark was out after a few long seconds. Everyone on the boat returned to the cages the next day, realizing this was a very rare event. The boat owner, captain, and crew are to be commended for making what could've been a tragic event into a happy ending. I'm sure God and luck had a bit to do with it too!"
