Navy Seal Survival by Elle James

A job only a SEAL could do

After feeling the heat in Honduras cleaning up a terrorist training camp, Duff Callaway is ready for some serious chilling in Cancun. Fun in the sun becomes a perilous rescue mission when the navy SEAL saves his beautiful diving partner from an underwater attack. Except Natalie Layne wasn't chosen at random.

Setting herself up as bait is the only way Natalie can find her abducted sister. But all her survival training can't prepare the former SOS agent for the irresistible stranger she has to trust with her life. Giving up isn't an option. Neither is giving into the powerful desire smouldering between them...