Researchers in a deep ocean submarine came face to face with a massive bluntnose sixgill shark about 20 ft. long...nearly twice the size of the sub. She was filmed off the coast of the Bahamas, emerging from the depths of the ocean and charging toward the submarine. Not much is known about this shark because they live so deep in the ocean. They're considered a dominant predator of the deep-sea ecosystem. In fact, these sharks predate most dinosaurs. Check out the video....
