Carla Cretoxyrhina - On this underwater excursion, the Pteranodon family meets up with Carla Cretoxyrhina, a young shark who turns out to be much nicer than her reputation suggests. She introduces the family to her dad, bringing them face to face with the "Big Fish in the Sea."Train Trouble - The speedy dinosaur brothers Oren and Ollie join our kids on a train trip to Troodon Town, but unplanned engine trouble sends Oren and Ollie sprinting the Roundhouse to bring back another engine to save the day!