Lake Okeechobee, known as the Big O or Florida's Inland Sea, is Florida's largest lake and the second-largest freshwater lake entirely within the United States (outside the Great Lakes). Spanning an impressive 730 square miles across five counties, this massive yet shallow body of water (averaging only 9 feet deep) is a premier fishing destination renowned for its trophy bass fishing and diverse ecosystem. The lake's name comes from Seminole Indian language meaning big water, an apt description for this vast aquatic resource. Its extensive marsh system provides critical habitat for numerous fish and wildlife species, including world-class sport fisheries, migratory birds, and several endangered species. Despite facing environmental challenges from water management practices, nutrient loading, and invasive species, Lake Okeechobee remains one of America's most productive freshwater fisheries, attracting millions of visitors annually and generating significant economic impact for the region.