 A Mexican Crocodile, (Crocodylus moreletii), hides amongst leaves and mangrove roots in cenote Car Wash, in Tulum, Mexico. In the decades of 1940 and 1950 it was driven to near extinction by hunters looking for their skin; today, as a result of widespread conservation efforts and the Crocodile Specialist Group established in 1971, the populations have recovered and are now listed as least concern by the IUCN.&nbsp; 