Dozens of pairs of caiman eyes peer out from the water at night. Depending on the angle between the reptile and the camera flash, a different color is produced. Photographer Daniel Fox, 37, captured the scene at the Yacare Pora farm in Ituzaingo, Argentina, while working on a photography project with partner Jasmine Rossi.
Caiman eyes have a layer called tapetum behind their retina, containing crystals that reflect light and make night vision possible.
Caimans are alligatorid crocodylians within the subfamily Caimaninae. The group is one of two subfamilies of the family Alligatoridae, the other being alligators. Caimans inhabit Central and South America.
They are relatively small crocodilians, with most species reaching lengths of only a few meters, although one species, the Black caiman, can exceed 4 metres (13 ft) in length. Several extinct forms are known, including Purussaurus, a giant Miocene genus that grew to 12 metres (39 ft) and the equally large Mourasuchus, which had a wide duck-like snout.