Deadly Currents - The Shark's Double Secret, #2

Shark shifters and romance! Tara knew life would be challenging with Spencer, the handsome shark shifter who whisked her away on a luxury yacht. After all, Spencer is trying to save the world. But the threats come from every direction, so she and Spencer take refuge on a hidden rainforest island. A few days on an island could be the break they both need. But when violent storms descend on the Caribbean, what Tara thought was a romantic hideaway becomes a deadly trap.
Spencer's enemies draw closer, and they've figured out his only weakness: Tara. Time is running out. If Spencer doesn't claim his soulmate, he'll lose her forever.