Habitat: In freshwater (including river, lakes and reservoirs) and brackish coastal habitats (including tidal estuaries, coastal lagoons and mangrove swamps). Distribution: Río San San and Canales de las Bananeras, Changuinola. Characteristics: One of the larger crocodilian species. Males typically reach 5 metres. Dorsal armour is irregular and much reduced in comparison with other species. There is a distinctive swelling in front of each eye, visible in all except the hatchlings. Juveniles are lighter coloured (light tan) than more mature animals, with banding on the body and tail. Adults take on an olive brown colour. Iris is silvery.