8. Mariana Trench Mystery Shark
In 1989, during a simple research experiment in Suruga Bay, at a depth of almost a mile (1.5 kilometers), not far from the Mariana Trench, Japanese scientists witnessed something incredible… and they got it on video.
Scientists were researching deep marine life and had placed a container with bait on the sea floor. A camera was attached to see what kind of aquatic life would investigate. Numerous deep-water sharks and fish came around but unexpectedly a very large shark entered the frame.
The shark was so huge that the other sharks, attempting to scatter, couldn’t avoid running into it and being deflected off. The massive shark is unidentified and hard to measure with estimates placing it at 30-50 ft. (9-15 meters) in length. An accurate measurement is difficult as the size of the bait trap is unknown.
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