Provider: Eastern (ET) Change
The Pteranodons meet a shark who's much nicer than her reputation would suggest; speedy dinosaur brothers Oren and Ollie join the gang on a train trip, and when engine trouble occurs, they sprint to the roundhouse to retrieve another engine.
The Pteranodons enjoy a synchronized-swimming show while on an underwater trip to see brothers Max and Mitch Michelinoceras; a day with Dad at Big Pond is interrupted by rain, sending everyone scurrying into a cave.
Watching squirrels, Sid wonders what kind of scientist studies animals. He learns the answer when the class goes on a field trip to the Science Center, where Gabriela's mom, a marine biologist, talks about how she scuba dives with whales.