"Aquarium" is a novel by American author David Vann. The story follows twelve-year-old Caitlin and her mother, Sheri, who live in a small apartment in Seattle. Caitlin is a bright and sensitive girl who spends much of her time visiting the local aquarium, where she finds solace and comfort among the sea creatures. When a chance encounter with a stranger leads to a friendship that grows into something more, Caitlin's world is turned upside down. As she grapples with the complexities of love, loyalty, and family, Caitlin is forced to confront the painful truths about her past and to make difficult choices about her future. The novel explores themes of love, loss, family, and self-discovery. Vann's writing style is known for its lyricism and emotional depth. "Aquarium" has been praised for its poignant and powerful portrayal of a young girl's coming-of-age in the face of difficult circumstances.