Fishing is the dominant industry, both sport and commercial, along with seafood processing plants.
An attractive bayfront park that stretches along Tres Palacios Bay offers palm trees, picnicking facilities, and a spectacular 1.5 mile railed walkway at the water's edge. Other features include a pier with covered pavilion, fishing jetty, and boat ramps. Still accepting guests on bayshore between 4th and 5th Streets. Marine Fisheries Research Station - Research facility where studies include adaptability of saltwater species to freshwater. Tours are of interest to those with knowledge of marine biology.