When the ferocious shape-shifting Kraken awakes after thousands of years and threatens the Mer, Sapphire agrees to help them by going with her brother Conor and their friend Faro into the Deep to lull the monster back to sleep.

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.

When her estranged grandmother dies and leaves her mother the family home on Selkie Island, seventeen-year-old Miranda meets her mother on the Georgia island, where she discovers mysterious family secrets and another side to her logical, science-loving self.

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.

A long awaited fishing trip turns scary for cousins Hunter and Leo when a sea monster appears.

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.

Jesse and Daisy and their dragon friend, Emmy, try to recover a Thunder Egg from merpeople who stole it from Daisy near the Inn of the Barking Seal, where the cousins are visiting their grandmother Polly.

Kai, a merboy, loves to share hugs with his mother, but learns that some friends prefer fin bumps, tail claps, tentacle shakes, or claw pinches.

"'Mermin the Merman from Mer?' That's the question Pete and his friends ask after finding the fish-boy washed up on the beach. Mermin just escaped the undersea kingdom of Mer, and is ready to have some fun on dry land. Mermin is a little odd: he can talk to fish, and packs quite a punch. But why would this aquatic kid be afraid to swim? Perhaps it has something to do with the fishy pursuers who have followed him from the depths below"--Back cover....

Mermin is finally getting used to life on dry land when he is discovered by a duo of amateur paranormal investigators and, to make matters worse, Pete and the others discover the truth about who Mermin really is.