The Mermaid’s Return by Kellie McAllen

A mermaid on a mission, four sexy, human mates, and a destiny divided between two worlds.
Thrust into an intriguing world of merfolk she never knew existed, Coral is awed and inspired by their dual existence. And after unexpectedly finding the one person who knows the truth about her past, Coral realizes she’s lived most of her life under a spell of lies.
Determined to free her people from the deception that’s held them captive, Coral returns to her underwater home. But she soon realizes that defeating a powerful stronghold is more than one mermaid can handle.
Lucky to have escaped with her life, Coral returns to the land and the men she loves. But when duty calls her once again, Coral must decide once and for all between her heart and her destiny.