History YMMV / MakoMermaidsAnH2OAdventure

* SugarWiki/HeartwarmingMoments: When she learns that Zac [[spoiler: is her brother]], she immediately chooses to interpose herself between him and Veridia in his defense, knowing she'll be banished from the pod for it. More than that, Ondina, who doesn't particularly care for Zac, also protects him out of loyalty to Mimmi.

* CrowningMomentOfHeartwarming: When she learns that Zac [[spoiler: is her brother]], she immediately chooses to interpose herself between him and Veridia in his defense, knowing she'll be banished from the pod for it. More than that, Ondina, who doesn't particularly care for Zac, also protects him out of loyalty to Mimmi.

* FanService: If you think [[Series/H2OJustAddWater the original series]] was fanservice-y for portraying pretty, young girls wearing short clothes and swimsuits all the time, the spin-off goes off the rocker, casting actors who're clearly older and much fitter than the previous ones. The main actor is just too buffed-up to be convincing as a high-school teenager and every female lead has the thighs of a professional gymnast. Compare with the skinny, shorter-in-stature leads in the original series, or even Charlotte from season 2 who was clearly chubbier.

* CrowningMomentOfHeartwarming: When she learns that Zac [[spoiler: is her brother]], she immediately chooses to interpose herself between him and Veridia in his defense, know she'll be banished from the pod. More than that, Ondina, who doesn't particularly care for Zac, also protects him out of loyalty to Mimmi.

* FanService: If you think [[Series/H2OJustAddWater the original series]] was fanservice-y for portraying pretty, young girls wearing short clothes and swimsuits all the time, the spin-off goes off the rocker, casting actors who're clearly older and much more fitter than the previous ones. The main actor is just too buffed-up to be convincing as a high-school teenager and every female lead has the thighs of a professional gymnast. Compare with the skinny, shorter-in-stature leads in the original series, or even Charlotte from season 2 who was clearly chubbier.

* Fanservice: If you think [[Series/H2OJustAddWater the original series]] was fanservice-y for portraying pretty, young girls wearing short clothes and swimsuits all the time, the spin-off goes off the rocker, casting actors who're clearly older and much more fitter than the previous ones. The main actor is just too buffed-up to be convincing as a high-school teenager and every female lead has the thighs of a professional gymnast. Compare with the skinny, shorter-in-stature leads in the original series, or even Charlotte from season 2 who was clearly chubbier.

* IdiotBall: Everyone gets a turn passing it to each other at times. Literally half the plot problems and conflicts in the first season are misunderstandings that could be solved by the characters stopping the "We can't explain it/It's too complicated." justification and actually explaining things to each other. It gets especially bad when characters refuse to explain the fantasy elements to those who are already aware of the in-series magic to begin with.
%%* UnintentionallyUnsympathetic: The three Mermaids who constantly make Zac's, a nice, normal boy, in a beyond belief situation, life a living hell in the first half for their own selfish goal of returning home. By the time Zac finds the trident, and starts using the power against them it's supposed to be tragic what he's putting them through, but in a way, feels justified, in a way of mess with the bull (Zac) deal with the horns (The Trident). NOTE: How did the mermaids make Zac's life a living hell in the first half of the season? They lied to him, but did very little to interfere in his life. There's YMMV, and then there's inventing "alternative facts" from whole cloth.

* UnintentionallyUnsympathetic: The three Mermaids who constantly make Zac's, a nice, normal boy, in a beyond belief situation, life a living hell in the first half for their own selfish goal of returning home. By the time Zac finds the trident, and starts using the power against them it's supposed to be tragic what he's putting them through, but in a way, feels justified, in a way of mess with the bull (Zac) deal with the horns (The Trident).

* IdiotBall: Literally half the plot problems and conflicts in the first season are misunderstandings that could be solved by the characters stopping the "We can't explain it/It's too complicated." justification and actually explaining things to each other. It gets especially bad when characters refuse to explain the fantasy elements to those who are already aware of the in-series magic to begin with.

* GrowingTheBeard: Starting in the second season, the protagonist characters start behaving much more kindly toward one another, having fewer and less petty interpersonal conflicts and usually discussing problems at hand politely and with respect to everyone's viewpoints. Contrast with Nixie and Evie getting into a physical fight over shoes...

* GrowingTheBeard: Starting in the second season, the protagonist characters start behaving much more kindly toward one another, having fewer and more sensible conflicts and usually discussing problems at hand politely and with respect to everyone's viewpoints. Contrast with Nixie and Evie getting into a physical fight over shoes...

* HamAndCheese: The three titular mermaids, particularly Nixie (Ivy Latimer), who takes a bigger slice. Just see them learning to walk in the second episode.