because there are secrets hidden there that, as a marine biologist, is really the dream to unravel. for me, it's the most beautiful place on earth. >> in this remote fjord, vreni haussermann has made an extraordinary discovery, cold water corals. unlike tropical corals, which need sunlight, these depend solely on plankton for survival. ecosystems like this are usually found as deep as 8,000 feet, only accessible by deep water submersibles. this is one of the only places