​Japanese fisherman found a living deep-sea Frilled Shark. Although science did know about this shark before now, it has rarely been seen alive, and this has got to be the best video footage ever taken of the eel-like “living fossil”.

info: http://en.wikipedia.org/wiki/Frilled_shark

Humans rarely encounter frilled sharks, which prefer to remain in the oceans' depths, up to 5,000 feet (1,500 meters) below the surface. Considered living fossils, frilled sharks bear many physical characteristics of ancestors who swam the seas in the time of the dinosaurs. This 5.3-foot (1.6-meter) specimen was found in shallow water in Japan in 2007 and transferred to a marine park. It died hours after being caught.