The Water Keepers series by Christie Anderson follows a teenage girl who discovers she is part of a hidden world of magical beings connected to the oceans and entrusted with protecting humanity. Across the first three books, she learns to control her extraordinary abilities, uncovers long-buried secrets about her heritage, and becomes caught in a conflict between rival supernatural forces. As friendships deepen and romance blossoms, she must balance the challenges of ordinary life with the growing responsibilities of her destiny, in a story that blends fantasy, adventure, and coming-of-age themes.