For the first time, researchers have filmed the elusive goblin shark alive in the deep ocean where it naturally lives. The remarkable sightings greatly expand the shark's known range and depth, showing that this 125-million-year-old "living fossil" still has plenty of secrets left to reveal. Until now, every confirmed video or observation of a live goblin shark came only after the animal had been accidentally caught on a fishing line and brought to the surface. Divers could briefly examine the sharks, but the animals typically died soon ... [3942 chars]