Seasons
Season 1 episodes — IMDb ratings
| # | Title | Rating | Votes |
|---|
| 1 | The Secret of Mako Island | 7.5 | 24 |
| 2 | Caught in the Net | 7.3 | 19 |
| 3 | The White Mermaid | 6.6 | 17 |
| 4 | A Stormy Party | 7.6 | 17 |
| 5 | Mako Island Hotel | 7.6 | 17 |
| 6 | The Mysterious Seaweed | 8.3 | 17 |
| 7 | It's in the Bag! | 7.4 | 18 |
| 8 | Dolphin City Triangle | 6.8 | 17 |
| 9 | Poseidon's Daughter | 8.0 | 17 |
| 10 | Dolphin City Mascot | 7.9 | 18 |
| 11 | Bad Waves | 7.8 | 17 |
| 12 | Jaw-ache! | 7.2 | 17 |
| 13 | The Lost Ring | 8.3 | 19 |
Season 2 episodes — IMDb ratings
| # | Title | Rating | Votes |
|---|
| 1 | Reported Missing | 7.9 | 17 |
| 2 | Memory Lapse | 8.7 | 19 |
| 3 | Valentine's Day | 7.8 | 16 |
| 4 | Kidnapped! | 8.3 | 17 |
| 5 | A Strange Phenomenon | 8.1 | 16 |
| 6 | Handle with Care | 7.0 | 16 |
| 7 | The Return of the White Mermaid | 7.0 | 15 |
| 8 | Three Days Underwater | 8.0 | 16 |
| 9 | Robot Duel | 6.6 | 15 |
| 10 | The Creature from the Bay | 7.5 | 16 |
| 11 | Underwater Takeover | 7.0 | 15 |
| 12 | Imminent Danger | 7.8 | 15 |
| 13 | Trapped | 7.8 | 16 |
