dr. james delgado. >> they wrote essays, they were interviewed, and the five that were picked, i think, really do represent a great hope for all of us older folks in terms of the next generation of explorers and scientists. >> using sonar waves to scan the lake floor, the students found evidence of two ships lying thousands of feet below the surface. >> once we had targets of interest, we then dropped cameras down on a remotely operated vehicle robotic system. >> the teens guided the search from on board the expedition ship, and their findings were confirmed. >> the most exciting part of the experience would have to be when we first came upon the wrecks, because it was such a beautiful sight to see those ships so well preserved on the lake bed. >> divers went down to gather more information, but it was the teens themselves who positively identified two freighters that had gone down more than 100 years ago. >> we didn't want them to just look over our shoulder.idthe eay experience through hands-on work," and with that forensic work, bit by bit, they were able to get the clues they needed to say