Dark Tides Series by Devyn Quinn

There are some things that can't stay buried - even in the deep of the ocean. As a woman with a secret, lighthouse keeper Tessa Lonike savors her solitude on the island of Little Mer, off the coast of Maine. During a violent storm, Tessa spots a man thrashing in the ice-cold waters and dives in to save him, using her ability as a mermaid to easily pull him to shore. When Kenneth Randall awakens on the beach, he is alone, left with the haunting memory of his beautiful flame-haired savior... moreThere are some things that can't stay buried - even in the deep of the ocean. As a woman with a secret, lighthouse keeper Tessa Lonike savors her solitude on the island of Little Mer, off the coast of Maine. During a violent storm, Tessa spots a man thrashing in the ice-cold waters and dives in to save him, using her ability as a mermaid to easily pull him to shore. When Kenneth Randall awakens on the beach, he is alone, left with the haunting memory of his beautiful flame-haired savior. And a year later, when Kenneth meets Tessa again, he's determined not to let her slip away. Just as the desire between them begins to burn, Tessa's ex-lover comes back to town with a tantalizing clue to her murky heritage. The trio travels to the Mediterranean in search of answers, and what they find there will change Tessa's life forever. She'll have to choose between the world of her people and the call of her heart.... less

Never embracing her mermaid heritage, Gwen Lonike lives in the human world as the owner of a Maine B&B. But when the gateway to a lost mermaid kingdom is opened, freeing its dangerous queen, Gwen can no longer hide, nor keep her secret from covert agent Blake Whittaker, who's assigned to trail a strange thread of paranormal activity... moreNever embracing her mermaid heritage, Gwen Lonike lives in the human world as the owner of a Maine B&B. But when the gateway to a lost mermaid kingdom is opened, freeing its dangerous queen, Gwen can no longer hide, nor keep her secret from covert agent Blake Whittaker, who's assigned to trail a strange thread of paranormal activity. How long can Gwen and her sisters remain safe from a destructive queen, and from Blake's superiors, whose ultimate mission could prove the greatest threat of all? less

After defeating the covert agency that threatened to destroy her and her sisters, Addison Lonike grudgingly resumes her life as an EMT in Maine. She would love nothing more than to take on the dangerous Mer queen, Magaera, who is hell-bent on destroying them. But with two baby nieces on the way, she can’t take the risk. That is, until Mason McKenzie arrives… Captain of the naval task force on the hunt for Queen Magaera in the Mediterranean, Mason sees the perfect recruit in Addison... moreAfter defeating the covert agency that threatened to destroy her and her sisters, Addison Lonike grudgingly resumes her life as an EMT in Maine. She would love nothing more than to take on the dangerous Mer queen, Magaera, who is hell-bent on destroying them. But with two baby nieces on the way, she can’t take the risk. That is, until Mason McKenzie arrives… Captain of the naval task force on the hunt for Queen Magaera in the Mediterranean, Mason sees the perfect recruit in Addison. But while at sea, the pair is pulled under a wave of passion that threatens their independent natures—and their mission. An encounter with a new race of male sea-shifters further complicates Addison’s desires. Now, she must choose between a life of the sea, or fulfilling the deepest longings of her heart… less