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.
| Title | Time | |
|---|---|---|
| 1 | Metamorphosis | 2006-07-07 |
| 2 | Pool Party | 2006-07-14 |
| 3 | Catch of the Day | 2006-07-21 |
| 4 | Party Girls | 2006-07-28 |
| 5 | Something Fishy | 2006-08-04 |
| 6 | Young Love | 2006-08-11 |
| 7 | Moon Spell | 2006-08-18 |
| 8 | The Denman Affair | 2006-08-25 |
| 9 | Dangerous Waters | 2006-09-01 |
| 10 | The Camera Never Lies | 2006-09-08 |
| 11 | Sink or Swim | 2006-09-15 |
| 12 | The Siren Effect | 2006-09-22 |
| 13 | Shipwrecked | 2006-09-29 |
| 14 | Surprise! | 2006-10-06 |
| 15 | The Big Chill | 2006-10-13 |
| 16 | Lovesick | 2006-10-20 |
| 17 | Under the Weather | 2006-10-27 |
| 18 | Bad Moon Rising | 2006-11-03 |
| 19 | Hurricane Angela | 2006-11-10 |
| 20 | Hook, Line and Sinker | 2006-11-17 |
| 21 | Red Herring | 2006-11-24 |
| 22 | Fish Out Of Water | 2006-12-01 |
| 23 | In Too Deep | 2006-12-08 |
| 24 | Love Potion #9 | 2006-12-15 |
| 25 | Dr. Danger | 2006-12-22 |
| 26 | A Twist in the Tail | 2006-12-29 |
