Shark Cowboys explores the humongous effort of two teams of anglers working to save the sharks of the Gulf of Mexico by participating in a grueling 3-day tournament known as Sharkathon. During this man-powered fishing competition anglers compete to successfully tag-and-release the largest sharks while facing extreme weather, cut lines and the unpredictable gulf itself. With 250,000 sharks being slaughtered around the world daily, these every day Texans competing in Sharkathon are instrumental in gathering research geared towards saving these apex predators.