Amarea has long turquoise hair and blue eyes. She wears a pink cap decorated with pearls. Once transformed, it has a simple, pink and violet sequined bra, decorated with ruffles as well as long pink sleeves with ruffles. Its siren tail is long, pink, spangled and adorned with ruffles. She wears a yellow starfish in her hair, one at the waist and also in earrings. Amarea also has a blue and pink bracelet on her arm and small yellow wings.
Amarea is a very gentle and sweet mermaid. She is very caring and protective to her friends.
Amarea is captured by Valtor along with Coralia and Talassia. Valtor then places his mark on them; stealing their magic and changing them into sea monsters that attacked anything that crossed their paths. After Valtor's defeat, Amarea's magic returned and she became a mermaid again.
- In the Nickelodeon dub, she was called Coralia (not to be confused with the real Coralia).
- Amarea's name is of Portuguese origin and it means "love" or "beloved".