H2O: Just Add Water (2006)

Adventure · Comedy · Drama

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.

IMDb rating: 7.3 (22,287 votes)
Episode average: 7.7 ↑ +0.4 vs IMDb
Seasons: 3
Streaming (US): Netflix · Amazon Prime Video
Language: EN
Type: TV series

Shape drift trajectory: its last season breaks the pattern the earlier ones set. Rising Shows ranks whole shows by the shape of their rating trend rather than one average score, which is how you find a show that got better rather than a show that started well. See every Shape drift show in the explorer →

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Ratings refreshed Oct 3, 2026 · 3 seasons indexed

Cast

Seasons

Season 1 (2006)

7.62 avg 26 episodes 7.6 → 8.4 25 min avg

Season 1 episodes - IMDb ratings
#	Title	Rating	Votes
1	Metamorphosis	7.6	440
2	Pool Party	7.4	339
3	Catch of the Day	7.2	301
4	Party Girls	7.3	287
5	Something Fishy	7.4	283
6	Young Love	7.4	267
7	Moon Spell	7.7	276
8	The Denman Affair	7.3	253
9	Dangerous Waters	7.3	255
10	The Camera Never Lies	7.6	253
11	Sink or Swim	7.2	236
12	The Siren Effect	7.6	253
13	Shipwrecked	7.5	238
14	Surprise!	7.3	230
15	The Big Chill	7.6	233
16	Lovesick	7.7	236
17	Under the Weather	7.8	243
18	Bad Moon Rising	8.1	247
19	Hurricane Angela	7.1	225
20	Hook, Line and Sinker	7.8	234
21	Red Herring	7.9	223
22	Fish Out of Water	8.0	225
23	In Too Deep	8.0	232
24	Love Potion	7.9	223
25	Dr. Danger	8.0	228
26	A Twist in the Tail	8.4	251

Season 2 (2007)

7.79 avg 26 episodes 7.5 → 8.6 25 min avg

Big finale

Season 2 episodes - IMDb ratings
#	Title	Rating	Votes
1	Stormy Weather	7.5	207
2	Control	7.4	217
3	The One That Got Away	7.6	210
4	Fire and Ice	7.5	204
5	Hocus Pocus	7.7	206
6	Pressure Cooker	7.4	199
7	In Hot Water	7.4	192
8	Wrong Side of the Tracks	8.5	234
9	Riding for a Fall	7.4	190
10	Missed the Boat	7.5	187
11	In Over Our Heads	8.3	237
12	Fish Fever	7.7	190
13	Moonwalker	7.9	193
14	Get Off My Tail	7.4	186
15	Irresistible	7.7	195
16	Double Trouble	7.8	200
17	Moonstruck	8.1	199
18	The Heat Is On	7.7	186
19	The Gracie Code: Part 1	8.3	204
20	The Gracie Code: Part 2	7.9	189
21	And Then There Were Four	7.8	185
22	Bubble, Bubble, Toil and Trouble	7.4	184
23	Reckless	7.5	179
24	Three's Company	8.1	189
25	Sea Change	8.5	223
26	Unfathomable	8.6	254

Season 3 (2009)

7.55 avg 26 episodes 7.9 → 8.0 25 min avg

Shape drift

Season 3 episodes - IMDb ratings
#	Title	Rating	Votes
1	The Awakening	7.9	211
2	Jungle Hunt	7.3	176
3	Keep Your Enemies Close	7.2	176
4	Valentine's Day	7.3	177
5	Big Ideas	7.3	163
6	Secrets and Lies	7.5	162
7	Happy Families	7.3	161
8	Kidnapped	7.6	160
9	The Sorcerer's Apprentice	7.5	164
10	Revealed	7.8	165
11	Just a Girl at Heart	7.4	164
12	Crime and Punishment	8.0	175
13	To Have and to Hold Back	8.1	171
14	Mermaid Magic	7.8	161
15	Power Play	7.1	156
16	The Dark Side	7.6	153
17	A Magnetic Attraction	7.3	154
18	Into the Light	7.2	155
19	Breakaway	7.7	155
20	Queen for a Day	7.5	157
21	The Jewel Thief	7.5	154
22	Mako Masters	7.6	153
23	Beach Party	7.7	158
24	Too Close for Comfort	7.2	154
25	A Date with Destiny	7.8	164
26	Graduation	8.0	196

H2O: Just Add Water (2006)

Cast

Seasons

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