As millions of years pass, fish build on their basic design. The muscles around their backbone evolve into a powerful tail and fins appear. They evolve a distinct head. He may not look like you or I, but this odd fish is becoming a blueprint for our own bodies.
Walking with Dinosaurs was popular enough to inspire a stage performance, many spin-offs, and now a re-make. My favorite of these is the prequel Walking with Monsters: Life Before Dinosaurs. It is a 3-part series that tells the tale of evolution and life in the Paleozoic.
This is how we went from simple little swimming creatures to taking our first steps on land. A glorious moment in history.