When her mother's reappearance in the Syrena world turns the two kingdoms -- Poseidon and Triton -- against one another, Emma must risk everything she loves and reveal herself -- and her Gift -- to save a people she's never known.

As they search for their missing father near their Cornwall home, Sapphy and her brother Conor learn about their family's connection to the domains of air and of water.

The merfolk of Atlantis have called in yeti Blizz Richards and his team of cryptozoologists to capture the kraken that is attacking their city, but when he starts to investigate, Blizz realizes that there is a lot the merfolk are not telling him--and something fishy is definitely going on.

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...

As Kurt and Tristan battle for the Sea King's throne, sea witch Nieve kidnaps Layla and raises an army of mutant sea crature to overthrow the crown.

Bottoming out after a dramatic breakup, doctoral student Lucy accepts her sister's invitation to dog-sit at her home on Venice Beach for the summer, where she meets an eerily attractive swimmer whose Sirenic identity transforms her understanding of what real love looks like.

"The Deadmen are back...But so are the demons who have broken free of their eternal prison and are bent on mankind's destruction. The worst of the lot is Vine, determined to claim their lives for taking hers. She will see the world burn...and has the perfect lure to destroy them all. One of their own. Kalder Dupree has never known a day of mercy. Born to the cruelest of mer-races, he sacrificed himself for his crew and is in Vine's hands. He expects...

Galen, prince of the Syrena, is sent to land to find a girl he's heard can communicate with fish. He finds Emma and after several encounters, including a deadly one with a shark, Galen becomes convinced Emma holds the key to his kingdom.

In an otherworldly story set against the backdrop of Cold War-era America, an amphibious man is discovered in the Amazon--and subsequently finds love within the human race. In 1962, Elisa Esposito-- mute her whole life-- works as a janitor working the graveyard shift at Baltimore's Occam Aerospace Research Center. Only Zelda, a protective coworker, and Giles, her loving neighbor, help her make it through her day. Then she sees something she was never...