Season
- Season 3 2009-10-26
- Season 2 2007-09-28
- Season 1 2006-07-07
Episode
- Episode 1: Stormy Weather
- Episode 2: Control
- Episode 3: The One That Got Away
- Episode 4: Fire and Ice
- Episode 5: Hocus Pocus
- Episode 6: Pressure Cooker
- Episode 7: In Hot Water
- Episode 8: Wrong Side of the Tracks
- Episode 9: Riding for a Fall
- Episode 10: Missed the Boat
- Episode 11: In Over Our Heads
- Episode 12: Fish Fever
- Episode 13: Moonwalker
- Episode 14: Get Off My Tail
- Episode 15: Irresistable
- Episode 16: Double Trouble
- Episode 17: Moonstruck
- Episode 18: The Heat Is On
- Episode 19: The Gracie Code (1)
- Episode 20: The Gracie Code (2)
- Episode 21: And Then There Were Four
- Episode 22: Bubble Bubble, Toil and Trouble
- Episode 23: Reckless
- Episode 24: Three's Company
- Episode 25: Sea Change
- Episode 26: Unfathomable
H2O: Just Add Water Season 2 The Heat Is On
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.
