Teens Jack, Marco, Aly, and Cass begin a quest to find seven pieces of Atlantis's 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.

Jack and his friends desperately search for the rest of the lost Loculi and confront the armies of Artemis in order to rescue Aly, who has been pulled back into Atlantis by King Uhla'ar.

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.

Promi and Atlanta continue the fight against the evil spirits and their mortal counterparts on the island of Atlantis.

Spending the summer after seventh 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.

While exploring the seas for the lost continent of Atlantis, you are separated from your diving vessel. By choosing specific pages, you determine the outcome.

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...

Eureka, a girl whose tears have the power to raise the lost continent of Atlantis and who travels across the ocean with Cat, her family, and Ander, the gorgeous and mysterious Seedbearer who promises to help her, has the chance to save the world might have to give up everything--even love.

"Life on Atlantis has always been unpredictable. But lately, the Community has finally started to feel like the stable home Riley hoped it could be—until the weather becomes anything but stable. After three Red Moons within a month, the latest of which brings an earthquake, it’s clear that something is wrong. But what is causing this change? In addition to creating chaos, the storms are also damaging homes across the territories and...