Chasing the Waves - The Depths and the Shallows, #1

As an agent of The Shallows, Galadir accepts a job escorting a family of Selkies from Tasmania to Ireland, knowing there will be risk. The ocean is filled with sharks and other operatives of The Depths, an organization of shifters bent on reclaiming the oceans for themselves, who are determined to stop them. When things get dire, Galadir is forced to accept aid from an unexpected source. Chase Crowely is a marine photographer who has just received his first assignment from a major nature magazine.
Now he races around the world to try to photograph the unusual sight of a dolphin protecting fur seals. Little does he know there's much more to the story than he suspects. By the time he gets the pictures he wants, he's torn between his need to complete the assignment and his need to protect his new love. The two unlikely men come together to protect others, risking the possibility of destroying their own lives or at the very least their hearts.