Season
- Season 3 2009-10-26
- Season 2 2007-09-28
- Season 1 2006-07-07
Episode
- Episode 1: The Awakening
- Episode 2: Jungle Hunt
- Episode 3: Keep Your Enemies Close
- Episode 4: Valentines Day
- Episode 5: Big Ideas
- Episode 6: Secrets & Lies
- Episode 7: Happy Families
- Episode 8: Kidnapped
- Episode 9: The Sorcerer's Apprentice
- Episode 10: Revealed
- Episode 11: Just A Girl At Heart
- Episode 12: Crime & Punishment
- Episode 13: To Have & To Hold Back
- Episode 14: Mermaid Magic
- Episode 15: Power Play
- Episode 16: The Dark Side
- Episode 17: A Magnetic Attraction
- Episode 18: Into The Light
- Episode 19: Breakaway
- Episode 20: Queen For A Day
- Episode 21: The Jewel Thief
- Episode 22: Mako Masters
- Episode 23: Beach Party
- Episode 24: Too Close For Comfort
- Episode 25: A Date With Destiny
- Episode 26: Graduation
H2O: Just Add Water Season 3 Big Ideas
H2O: Just Add Water revolves around three teenage girls facing everyday teen problems with an added twist: they cope with the burden of growing a giant fin and transforming into mermaids whenever they come in contact with water.
