Aquamarine (2006)

The youngest of King Triton’s daughters, and the most defiant, Ariel longs to find out more about the world beyond the sea, and while visiting the surface, falls for the dashing Prince Eric. With mermaids forbidden to interact with humans, Ariel makes a deal with the evil sea witch, Ursula, which gives her a chance to experience life on land, but ultimately places her life – and her father’s crown – in jeopardy.

A teen learns that his birth mother is a mermaid after he begins to grow fins and slimy scales on his thirteenth birthday.

Barbie 'Brooklyn' Roberts, Barbie 'Malibu' Roberts, and sisters Skipper, Stacie, and Chelsea go on an underwater adventure as they transform into mermaids to help save the world of Pacifica.

In this animated follow-up to Fairytopia, Elina enlists the help of a mermaid, Nori, to save her friend Nalu, a merman prince who has been captured by the wicked Laverna.

Merliah Summers, a mermaid from Oceana, travels to Australia for a surfing competition. But when she learns that the evil Eris is planning to take over her kingdom, she must stop her at any cost.

Barbie and her sisters take off on another exciting, global adventure to visit their friend Ken at his summer internship at a beautiful and exotic coral reef.

When a young girl’s sketchbook falls into a strange pond, her drawings come to life—chaotic, real, and on the loose. As the town descends into chaos, her family must reunite and stop the monsters they never meant to unleash.

Sabrina travels to Australia's Great Barrier Reef with her best friend Gwen, a fellow witch from England, for a week-long vacation where they try to help protect a hidden mermaid colony whose habitat is threatened by ocean pollution, and by a local marine biologist determined to find the colony as his claim to fame. While Sabrina finds romance with a "merman" from the mermaid colony, Salem the cat finds a possible romance with another witch-turned-into-a-cat, named Hilary, but finds Sabrina's problems interfering with his plans.

King Louis XIV's quest for immortality leads him to capture and steal a mermaid's life force, a move that is further complicated by his illegitimate daughter's discovery of the creature.

Barbie stars as Merliah, a surfer who learns a shocking secret: she's a mermaid! She and her dolphin friend set out for an undersea adventure to rescue her mother, the queen of Oceana.