This series focuses on Earth's oceans, from coral reefs to the coasts. Along the way, we are introduced to a number of sea creatures, large and small, that dwell in these precious environments.
The earth's bodies of water are the focus of this film about evolution. As the narrator points out, the vast depths of the earth's oceans remain barely explored.
Corals are sessile animals, meaning they are immobile and anchored to one spot for the entirety of their lives. Stony coral, leathery coral, and sea fan coral are featured in this segment, along with the beautiful fish that inhabit coral reefs.