Follow marine archaeologists Dr. Frederick Hanselmann, Dr. Chris Horrell, and their team as they search for the remains of Spanish conquistador Hernán Cortés' deliberately scuttled fleet off Mexico's Gulf Coast. Captured through the lens of photographer Jonathan Kingston, this National Geographic Society Grant-funded expedition explores the underwater discovery of 16th-century anchors that may reveal the location of ships sunk in 1519—a strategic decision that altered the course of two civilizations and changed world history forever.