Fish Traps? (IMAGE) Smithsonian Tropical Research Institute Caption Semicircular structures on Panama's Pedro Gonzalez Island may have functioned as traps for fish and marine turtles Credit G. Saint Malo Usage Restrictions Credit: G. Saint Malo License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.