“The sea is a cruel mistress, but she can also be kind.”
— A general observation about the nature of the sea, early in the story.

Alice Hoffman (2001)
Genre
Fantasy / Children's / Young Adult / Romance
Reading Time
60 min
Key Themes
See below
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As their last summer together ends, two friends find an unexpected adventure with a heartbroken mermaid in their local pool, who needs to find love before she evaporates in the August sun.
Best friends Hailey and Claire spend what they know will be their last summer together in their small seaside town before Claire moves to Florida with her grandparents. They often visit the Capri Beach Club, a somewhat run-down local place. A strong hurricane, the worst in twenty years, hits their town, causing damage. After the storm, they return to the empty beach club to find the main pool filled with debris and many sea creatures. As they look in the murky water, they make an amazing discovery: a beautiful, blue-haired mermaid named Aquamarine, trapped in the pool.
Hailey and Claire are shocked but quickly become friends with Aquamarine. The mermaid explains her situation: she ran away from her ocean home after a fight with her strict father, the King of the Sea. Her father thinks human love is a myth and wants her to marry a merman she does not love. Aquamarine wants to prove him wrong, believing that if she finds a human boy who truly loves her, she can avoid the arranged marriage and keep her freedom. She is also on a tight schedule, as she can only live out of the ocean for three days before she will turn into sea foam.
Aquamarine quickly decides on Raymond, the handsome, kind lifeguard at the Capri Beach Club. She believes he is the key to proving her father wrong. Hailey and Claire, despite their doubts about human-mermaid romance, help their new friend. They begin a secret plan to make Raymond fall in love with Aquamarine. They realize Aquamarine needs to look human to interact with Raymond, so they help her hide her tail by wrapping it in a blanket or pretending she has an injury. They also teach her about human customs and how to talk.
The girls give Aquamarine a quick lesson in human behavior. They explain flirting, jealousy, and kindness. Aquamarine, being from a different world, often misunderstands human interactions, leading to funny and sometimes awkward moments. She struggles with lying and the subtleties of human talk, often being too direct. Through these lessons, the girls get closer to Aquamarine, and Aquamarine starts to understand human emotions, especially love, beyond the romantic idea she first had.
To improve her chances with Raymond, Hailey and Claire arrange for Aquamarine to go to a dance at the beach club. They help her pick an outfit and advise her on how to act. Aquamarine, despite her initial awkwardness, enjoys the dance. However, during an exciting moment, her legs start to turn back into a tail, threatening to reveal her true identity. Hailey and Claire quickly step in, creating a distraction and rushing Aquamarine away before anyone notices. This incident shows how hard it is to keep her secret and the constant risk of being found out.
Cecilia, a popular and somewhat mean girl who also likes Raymond, becomes suspicious of Aquamarine's sudden appearance and her close relationship with Raymond. She tries to ruin Aquamarine's efforts, spreading rumors and making mean comments. Aquamarine, new to human social rules, struggles to understand Cecilia's jealousy and meanness, often reacting with confusion. These interactions make Aquamarine's pursuit of Raymond harder and force Hailey and Claire to defend their friend, strengthening their loyalty and the bond they have formed.
As the three days pass, Aquamarine begins to understand that love is not just about big gestures or looks. She sees the friendship between Hailey and Claire and the kindness in Raymond's actions toward everyone, not just her. Raymond, for his part, is drawn to Aquamarine's unique charm and innocence. He shows real concern and affection for her, seeing beyond her unusual behavior. He does not say 'love' in the way Aquamarine first expected, but his consistent kindness and care are clear.
On the third day, as the sun sets, Aquamarine's strength fades, and her change back into a mermaid becomes final. She knows her time on land is almost over. Raymond, sensing her sadness and the urgency, approaches her. In a heartfelt moment, he expresses his deep affection and care for her, admitting that he feels something special for her, something like love. While not the passionate, storybook declaration Aquamarine might have first wanted, it is a real and deep connection, showing that human love truly exists.
With Raymond's heartfelt words, Aquamarine feels peace and accomplishment. She has found the proof she needed. As her body fully returns to its mermaid form, she says a tearful goodbye to Hailey and Claire, thanking them for their friendship and help. She then slips back into the ocean, carrying Raymond's words in her heart. She knows she can now face her father with confidence, knowing that human love is real and powerful, and that she has experienced it herself.
After Aquamarine leaves, Hailey and Claire are left with the sweet and sad memories of their magical summer. Claire still has to move, but their time with Aquamarine has made their bond stronger in an amazing way. They realize that their friendship is a powerful form of love, as real and important as any romantic love. They keep the secret of Aquamarine with them, a reminder that magic can exist in unexpected places and that true friendship can overcome distance and change. The summer, though ending, leaves them with wonder and the lasting strength of their connection.
The Protagonist
Aquamarine transforms from a naive, idealistic mermaid seeking a specific type of love into one who understands love's broader, more nuanced forms, including friendship and genuine affection.
The Protagonist
Hailey learns to embrace the unexpected magic in life and deepens her understanding of friendship's enduring power, even in the face of change.
The Protagonist
Claire navigates the pain of impending separation by finding wonder and reinforcement of her most important friendship through a magical experience.
The Supporting
Raymond's character remains largely consistent, serving as the catalyst for Aquamarine's emotional growth and proving the existence of human kindness and affection.
The Mentioned
As a mentioned character, the King's arc is inferred through Aquamarine's successful mission to prove him wrong.
The Supporting
Cecilia remains a static character, serving primarily as an antagonist to highlight the protagonists' loyalty and Aquamarine's innocence.
The Mentioned
Their role is static, serving as the external force driving Claire's move.
The lasting power of friendship is central to 'Aquamarine.' Hailey and Claire's bond supports the story, tested by Claire's upcoming move but made stronger by their shared magical experience. Their loyalty to each other and to Aquamarine, even when facing disbelief and possible exposure, shows this theme. They support, protect, and guide Aquamarine, showing that true friendship involves selflessness and commitment. The magical adventure helps solidify their connection, proving that distance cannot lessen a strong bond, as they promise to keep in touch and remember their time together.
“''Friends are like stars,' Hailey said, 'You don't always see them, but you know they're always there.'”
The book explores different kinds of love, going beyond a simple romantic ideal. Aquamarine first seeks grand, storybook love to prove her father wrong. However, through her interactions with Hailey, Claire, and Raymond, she learns that love shows up in kindness, true care, and the deep bond of friendship. Raymond's gentle affection and the girls' strong loyalty teach her that love is more complex and less about a specific declaration. The story suggests that love is a powerful, many-sided force found in unexpected places and forms, not just in romantic relationships, but also in the steady support of friends.
“''Love isn't just one thing,' Claire explained. 'It's a lot of different things. It's caring about someone, and wanting them to be happy.'”
The story is set during an important summer for Hailey and Claire, marking a change from childhood to the start of adolescence and coming change. Claire's move to Florida shows the unavoidable shifts that happen during this time of growing up. Their meeting with Aquamarine makes them face mature ideas like loyalty, sacrifice, and complex human emotions. The magical element helps them grow, helping them handle the worries of change and accept the unknown with a new sense of wonder and strength, preparing them for the next part of their lives.
“'This was it, the last summer. The last time everything would be exactly the same.'”
The novel suggests that magic can exist in ordinary settings if one is open to believing. The Capri Beach Club, a rather run-down local place, becomes the spot of an amazing discovery. Hailey and Claire, at first doubtful, quickly accept Aquamarine's reality. This theme shows the power of imagination and the willingness to see wonder in everyday life. The mermaid's presence changes their normal summer into an unforgettable adventure, emphasizing that even in a seemingly ordinary world, amazing things can happen if you let yourself believe.
“'Sometimes, when you least expect it, magic finds you.'”
A ticking clock creating urgency for Aquamarine's quest.
Aquamarine's ability to survive on land is limited to three days before she turns into sea foam. This plot device creates a strong sense of urgency and a ticking clock for her mission to find love. It adds tension to the narrative, forcing the characters to act quickly and making every interaction with Raymond crucial. Without this deadline, the story would lack its immediate stakes and the heightened emotional intensity of Aquamarine's impending fate, driving the plot forward rapidly.
The setting for the initial discovery and a temporary sanctuary.
The pool at the Capri Beach Club serves as both the initial site of Aquamarine's discovery and her primary sanctuary on land. After the hurricane, it becomes the unlikely vessel that delivers the mermaid to Hailey and Claire. It functions as a safe, enclosed environment where Aquamarine can hide her true identity and learn about human life, yet also a temporary prison as she cannot return to the vast ocean from it. It's a symbolic threshold between her world and theirs.
A natural disaster acting as a catalyst for the plot.
The fierce hurricane that hits the town is a crucial plot device. It is the catalyst that brings Aquamarine from the deep ocean into the Capri Beach Club pool, effectively stranding her and initiating the entire narrative. The storm not only delivers the mermaid but also creates a sense of isolation and disruption in the town, making the discovery of a magical creature more plausible and less likely to be immediately exposed to the wider public, thus allowing the girls to keep her secret.
The ability to grow legs or a tail, symbolizing her liminal state.
Aquamarine's ability to transform her tail into legs when out of water (with assistance from salt water and human food) and back into a tail when wet, is central to her being able to interact with the human world. This device highlights her liminal existence between two worlds. The partial transformations, like her legs almost reverting at the dance, create moments of suspense and danger, emphasizing the fragility of her disguise and the constant threat of discovery. It also visually represents her struggle to adapt to human life.
“The sea is a cruel mistress, but she can also be kind.”
— A general observation about the nature of the sea, early in the story.
“Sometimes the greatest treasures are found in the most unexpected places.”
— Said in reference to finding Aquamarine, a mermaid, after a storm.
“Love is like the ocean, vast and unpredictable, but always there.”
— Claire and Hailey reflect on what love means, especially in their friendship.
“Wishing for something doesn't make it real, but believing in it might.”
— Aquamarine discusses her desire to become human with the girls.
“You can't always get what you want, but you can always try to be happy with what you have.”
— A moment of resignation and wisdom from one of the girls.
“Friendship is a ship that can weather any storm.”
— Claire and Hailey reassure each other of their bond during a difficult time.
“The heart has a language all its own, one that doesn't need words.”
— Aquamarine's understanding of human emotions, despite her limited human vocabulary.
“Even the smallest wave can change the shore.”
— A metaphor for how small actions can have big impacts, particularly in love.
“To truly love someone, you have to let them be free.”
— A key lesson learned about the nature of love, especially towards the end.
“Sometimes the best way to find yourself is to get lost.”
— Claire and Hailey's adventure with Aquamarine takes them out of their comfort zones.
“The world is full of magic, if only you know where to look.”
— A recurring theme, emphasizing the wonder and fantasy present.
“It's not about being perfect, it's about being real.”
— Aquamarine tries to understand human imperfections and emotions.
“A promise made to the sea is a promise kept forever.”
— Reflecting on the enduring nature of commitments made near the ocean.
“The greatest adventures often begin with a little bit of fear.”
— The initial apprehension of the girls when they discover Aquamarine.
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