Shipwrecked! by Stephen Wood

For graduate student Jolie, summer on a research cruise in the Florida Keys was supposed to be about sunshine, diving, and escaping the chaos of everyday life. But everything changes when they bring up an old ship's battery from an uncharted shipwreck that they discover while exploring the coral reefs. What begins as a thrilling discovery alongside two ocean engineering professors from the Florida Institute of Technology quickly turns into something far more dangerous.