Teens Jack, Marco, Aly, and Cass begin a quest to find seven pieces of Atlantis' power that were hidden long ago and that will, if returned to Atlantis, save them from certain death due to the genetic abnormality that also gives them superior abilities.

Tim and his friends flee the hazardous Sea of Terror and head toward the city of Atlantis in pursuit of King Neptuna's stolen trident. "Tim, Belinda, Ferkle, and Princess Grace were headed to their doom...until a mythical sea creature came to their rescue. But in exchange for saving their lives, Princess Piscina needs them to bring back something very precious to the Kingdom of Merland: the trident of her father, King Neptuna. To do so, Tim and his...

Readers make choices that determine the outcome of the story when, while exploring the seas for the lost continent of Atlantis, they are separated from their diving vessel.

When Paulina, one of the Thea Sisters, finds a strange blue-skinned boy unconscious on the beach, the sisters set out to solve the mystery of who the boy is and where he comes from--and how to return him to his home.

Journeying to the ancient city of Babylon when Bhegad tracks down Marco, the companions face a daunting choice involving a dire trap and a long-lost figure from Jack's past.

Scooby-Doo and the gang are on the island of Bimini in the Bahamas to investigate a report that the lost city of Atlantis has been found--and the reader must choose the path their investigation will take, and how they will respond to the dangers that lurk underwater for anyone who seeks to find the lost civilization.

When her brother and friends are kidnapped, Riley embarks on a quest to enter the Enchanted Territory and ask the Fairy Queen for help, but in order to succeed, she must navigate the magical societies and learn the truth behind the history of Atlantis.

Spending the summer after sixth grade at his great-uncle's oceanside museum, Thatcher and local girl Trudy team up to help Shoal, one of the people of Atlantis cursed by a witch whose head still survives, and who has an army of monstrous creatures helping her.