Intertidal Barrier Trap (IMAGE) Smithsonian Tropical Research Institute Caption An intertidal barrier trap, known locally as an 'atajo,' in a small estuarine inlet (Estero Palo Blanco) near Aguadulce, Coclé, Panama, 1991. These traps are now prohibited, but in former times they trapped large numbers of small fish of the kinds that are salted and dried today, and would have done so in pre-Columbian times, but with different construction materials. Credit Richard Cooke Usage Restrictions None 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.