Of all the creatures in the ocean, sea horses are Echo Reef's favorite. They're sweet and gentle and they glide through the water so gracefully. When Echo discovers that Rocky Ridge, one of her Trident Academy classmates, has his own pet sea horse, she wants one right away. Not everyone agrees sea horses should be pets, however. Perhaps they are happiest when swimming freely. But Echo thinks that if Rocky can make a sea horse happy, she can too! Can't...

When her class at Trident Academy visits a pod of whales, Kiki Coral must overcome her fears with the help of her friends.

Shows games and activities that, when played with friends and family, can help promote health and well-being.

Longing for onstage stardom, Pearl auditions for the third-grade play and gets the part of the evil sea witch while her best friend is cast in the lead, a situation that challenges their friendship.

Kiki Coral has an amazing gift: she can see the future. She doesn't have visions very often, but they are always surprising! When Kiki sees a vision of her classmate Rocky Ridge coming face-to-frightening-face with a gigantic leatherback turtle, she is frightened to the tip of her shiny purple tail. Can Kiki save Rocky from his dangerous fate? What if no one in Trident Academy believes her scary prediction?

While preparing for a unit on storytelling, the mermaids of Trident Academy learn of a legendary pirate treasure in their own city and Pearl decides to find it, despite a warning that it is guarded by a ghost.

Wanting to help a lost baby polar bear return home, Kiki Coral and her mermaid friends worry that the cost of the bear's transportation will prevent them from seeing a concert performance of their favorite boy band.

Kiki and her friends learn about coding as they compete to be the escort for a young narwhal who will visit Trident Academy with her famous parents. Includes glossary, key to the codes used, and information about safeguarding narwhals' habitats.

Shelly Siren loves playing on Trident Academy's Shell Wars team. But is she ready to complete in the Shell Wars Championships in the fintastically famous city of Atlantis? As part of their trip, the mergirls get a tour of Atlantis and swim through Poseidon's Temple where Shelly sees a spookfish, which according to legend, carries a horrible curse.

When Echo injures her tail, she can't compete in the Poseidon Tail Flippers team competition. Will Echo find a way to help her team win from the sidelines?