Mermaid blood. When Shea MacNamara fell into the ocean for the first time, he found he could breathe underwater. The son of a mermaid, the sea is in his blood. Literally. The best part of Shea’s new life? His girlfriend Kae, who also happens to be a beautiful mermaid. But darkness lurks under the sea. When evil mermen kidnap Kae, the king reminds Shea that having royal blood means making tough choices. An Arctic dungeon, a fiery plane crash, the legendary halls of Atlantis…and narwhals? Having mermaid blood just got a lot more complicated.