The Dauphin Island Deep Sea Fishing Rodeo is the largest fishing rodeo in the world, and provides an unparalleled opportunity to capture baseline levels of natural toxins, petrochemical contaminants, heavy metals, and other anthropogenic contaminants such as pharmaceuticals, pesticides, and persistent organic pollutants in dozens of fish species. The goal of this research is to understand the body burdens and potential impacts on the health of these species so that we can mediate effects and keep healthy fish stocks in the Gulf of Mexico.