Crocodiles of the World The Alligators, Caimans, Crocodiles and Gharials of the WorldCrocodiles come in a variety of size, shape, habits, and even habitats, from the infamous saltwater crocodiles that occasionally near 6 metres in length, to the diminutive 1. 5 metre dwarf caimans from South Americas tropics. Crocodiles of the World explores all the facts and figures surrounding the ancestory of this intriguing family of reptiles, dispelling myths, and exploring their extensive evolution on the 230 million years that they have lived