Barbie in A Mermaid Tale 2

The pink streaks appear as the first visible manifestation of Merliah's mermaid heritage. When she's underwater during the wipeout, she discovers she can breathe and meets Zuma, confirming she is half-mermaid. The pink streaks are a magical sign of her connection to the ocean.

Earlier, Merliah's grandfather Break hints at her unique lineage when he reveals she was born with legs despite being half-mermaid.

Merillia is the magical substance that sustains the entire ocean and all its inhabitants. It is spun by the queen of Oceana, and without it, the ocean's vitality rapidly declines. Eris lacks the skill to spin Merillia properly, which is why the ocean is weakening throughout the film.

Zuma explains during the voyage to Oceana that the ocean's vitality is waning because Eris lacks the ability to spin Merillia.

Eris is Calissa's younger sister. When Calissa vanished years before the story begins, Eris took the opportunity to seize power and claim the throne for herself. However, Calissa was actually imprisoned in the palace dungeon the entire time, secretly spinning Merillia to keep the ocean alive.

Zuma reveals that Eris seized the throne when Calissa vanished, but the film doesn't initially reveal that Calissa was imprisoned.

The Destinies reveal that Merliah must collect three specific items: the Celestial Comb (located in an underwater cave), the Dreamfish (hidden in the Adenato currents), and Eris's protective necklace (which Merliah must steal during a festival). These three items together give her the power to overthrow the usurper.

The three mermaids with prophetic powers, known as the Destinies, directly instruct Merliah on what she must obtain.

After Eris yanks off Merliah's tail and exposes her legs, she conjures a whirlpool that banishes Merliah to the ocean's deepest trench. While trapped, Merliah calls on the Dreamfish, who offers to grant her deepest wish: return to Malibu and erase her mermaid half entirely. This is the film's major turning point.

The Dreamfish earlier promised to grant Merliah's deepest wish, setting up this crucial decision moment.

Merliah chooses to embrace her responsibilities as Oceana's princess rather than take the easy way out. She decides to accept her dual identity and fight for her kingdom rather than abandon it. This choice earns her a real mermaid tail that helps her escape the trench and continue her quest.

The Dreamfish specifically offers to erase her mermaid half, directly testing her commitment to her heritage.

When Calissa vanished years earlier, Eris actually captured her and imprisoned her in the palace dungeon. Despite being locked away, Calissa continued to spin Merillia from her cell, which is how the ocean survived despite Eris's incompetence. Eris took credit for producing Merillia during festivals to win the citizens' love.

During the festival, Zuma notes that Eris distributes Merillia to win adoration, but the source of this magic is never questioned until the reveal.

Calissa gifts Merliah a magical necklace that grants her the ability to transform between human and mermaid forms at will. This resolves the central conflict of the story by allowing Merliah to keep both her life on land (including competitive surfing) and her duties as Oceana's princess.

Throughout the film, Merliah struggles with choosing between her land life and her oceanic heritage, making this gift the perfect solution.

Merliah is half-mermaid and half-human, which is why she was born with legs rather than a tail. Her mother Calissa is the mermaid queen of Oceana, and her father is human. This hybrid nature is what allows her to live on land and eventually switch between forms.

Break reveals that Merliah was given to him as a baby because she was born with legs, establishing her unique half-human heritage.

Merliah surfaces and reveals her true identity to the Ocean people, using the Celestial Comb as proof of her royal lineage. When Eris pursues her, Merliah outsmarts the villain and drags her into the whirlpool itself, trapping Eris forever. She then locates the imprisoned Calissa and frees her to reclaim the throne.

Merliah's earlier defeat in the whirlpool is reversed when she returns with her real mermaid tail and uses the same trap against Eris.