Predator and Prey (The Shifter Chronicles 9‪)‬

Vietnam War vet turned deep-sea treasure hunter Digger Sullivan scratches out a living, and this new commission is just another job—albeit an exciting one—off the Florida coast in 1977. But while exploring the area, Digger and his crew encounter one shark too many.

Reef and his shark shifter clan are charged with protecting a vital, magical secret—two of four scrolls that, when brought together, could annihilate shifters across the world. But Reef can't keep his head in the game around this intriguing diver, and it's not long before Digger takes one of the scrolls topside. Reef now has two missions: seduce Digger and recapture the scroll. Despite his attraction to Digger, Reef's priority must be reclaiming the scroll.

For Digger's part, he can't keep his eyes off the flirty young man on his boat. While he doesn't know what Reef could want with a scarred old vet, he's not going to pass up an opportunity of pleasure. Unfortunately for Reef, he loses sight of his duty and all his plans go awry. Then Digger's crew is captured by the very person who commissioned them, and Reef and his shark clan are the only things standing between them and death.

Can be read as a standalone
Second Edition with revised and expanded text