1x04: Einstein: Chapter Four
1x02: Einstein: Chapter Two
1x01: Einstein: Chapter One
1x06: Coasts
1x05: Green Seas
1x04: Big Blue
1x03: Coral Reefs
1x02: The Deep
1x01: One Ocean
4x20: The Reckoning
4x19: On the Eve
4x17: The Great Army
4x15: All His Angels
4x13: Two Journeys
4x12: The Vision
