A yellow submarine
However, nobody is residing in this yellow submarine. While navigating it around the allotted lake bed region, the team stayed on dry land. And the ThunderFish met expectations. It returned stunning photographs to its jubilant masters. What did it notice? Now, all of the stories had been set aside. No fictional monsters or alien invasions would exist. The sonar scans in front of them clearly showed something, despite the fact that they had no idea what they were looking for.