Blue Gold by Clive Cussler and Paul Kemprecos

When a mysterious tragedy strikes an ocean research vessel, Kurt Austin and his NUMA team uncover a sinister plot that threatens the world’s most vital resource — water. From the depths of the Amazon to the frozen Arctic, Austin faces a ruthless global conspiracy led by a shadowy corporation determined to monopolize the planet’s freshwater supply. Racing against time and betrayal, he must navigate ancient secrets, technological warfare, and environmental catastrophe to prevent a disaster that could plunge the world into chaos. Blue Gold is a gripping, high-stakes adventure blending scientific intrigue, fast-paced action, and the thrill of exploration that defines the NUMA Files series.