The Siren’s Mate by Marianne Morea

Jayson Hunt isn’t your average archeologist. He’s an alpha geek who looks like superman’s stunt double with a passion for mythology. When given the opportunity to join a coveted underwater expedition in Greece, there’s no way he’s turning it down. Especially when the woman he’s secretly in love with is going, too.
Post-grad, Zoe Serenia, is the archeology department’s go-to gal. A gal with a secret crush. Despite how she feels about him, she’s never made a move, afraid it would jeopardize their working friendship. Especially when he’s the department’s answer to a real life Indiana Jones. Super smart and smoking hot.
Twenty-four hours before the Aegean launch, Jayson and Zoe are entangled in a plot to plunder the expedition and destroy their mentor’s life’s work. Thrown together, passions igniteon the high seas, as they try to save their mentor and preserve his legacy. Can they prove the existence of a legendary world lost beneath the blue water of the Aegean? Especially when they realize myths are real?