Episode Rankings
- #1 Fan Favorite


Every episode of H2O: The Molecule that Made Us Season 1 ranked from best to worst. Discover the Best Episodes of H2O: The Molecule that Made Us Season 1!
A landmark, three-part series that tells the human story through our relationship to water. We find out how our success is intimately connected to our control of the molecule, but that the growth of our
"Pulse" is the best rated episode of "H2O: The Molecule that Made Us" season 1. It scored 7.8/10 based on 27 votes. Directed by Unknown and written by Unknown, it aired on 4/22/2020. This episode is rated 0.4 points higher than the second-best, "Civilizations".