Sarah is ready for her fun day of swimming at the lake! Did you know that Parasaurolophus dinosaurs were duck billed, plant eaters with a crest on the top of their heads? The crest was mainly used to communicate with other dinosaurs and sounded a lot like a trombone. However, because it was hollow and connected to the nasal passageway, some scientists believe that it could have even been used as a snorkel! Sarah is so excited to use her snorkel today!