An “alien” shark was captured off the coast of Shizuoka, Japan. The fish was found 780 feet deep and weighed 1300 pounds.The shark was identified as a female megamouth. Recently discovered in 1976, is one of the rarest sharks on Earth, only about 100 were seen, and only 58 were caught. Although it has a huge mouth (hence the name) megamouth shark feeds only with plankton.