Transcript for USS Grayback discovered 75 years later
Finally tonight, our ABC news exclusive. Just before veterans day. The World War II submarine that went down in battle. American families back here at home with so many questions. What a team of explorers just found. 1,400 feet below the surface, off the coast of Japan, a team of ocean explorers just discovered the resting place of 80 American sailors. This is the first time the uss grayback has been seen in 75 years. And two of the people to first learn the news, relatives of those Americans who went down with the submarine. We haven't broadcast this, and we wanted to be the first ones to tell you, this is the grayback. Oh, my god. And we wanted to do this in person, all right? This is where your uncles are. Reporter: Gloria Hurney, who lost her uncle Raymond parks, an electrician's mate, first class. And Kathy Taylor, she lost her uncle and godfather John Patrick king, an electrician's mate, the uss grayback, a World War II sub credited with sinking 14 enemy ships. It set out from pearl harbor in 1944 to patrol the seas south of Japan, never to return again. I committed from the very beginning, from a little girl, that I was gonna find him or follow him or keep his memory alive to whatever I could do. Reporter: We met Kathy and Gloria at the Carnegie science center in Pittsburgh. There's a book I read and it said, these ships are known only to god. But now we know where the grayback is. Reporter: The grayback, you can even see the plaque intact after all these years, discovered south of okinawa. Tim Taylor and wife Christine Dennison discovered it with their team as part of their lost 52 project. These two explorers have now found 5 of the 52 lost U.S. Subs during World War II. With the technology that we're using, and the ability to cover large swaths of ground, we're looking at potential to find several more. That cutting edge technology includes submersibles that can reach the ocean floor, automated to help create 3D renderings of the sub, providing clues of its final moments. It's very vital that we remember them, and that they feel that they haven't been forgotten, that their sacrifice wasn't in vain. Reporter: A tribute to those that gave the ultimate sacrifice. And for the families the discovery is a type of small remedy for all those years of pain. He's come back. Thank you. Thank you very much. Our thanks to lost 52 for sharing their find, and to the families for allowing us to capture that special moment. We thank you for watching. I'm Tom llamas in New York. Have a great evening. Good night. Ribeiro: Here's a sneak peek at tonight's "Afv."
This transcript has been automatically generated and may not be 100% accurate.