Reptiles Search for the best wildlife watching in the world by species – starting with reptiles. Crocodiles & Alligators (Crocodilia) American crocodile Caiman Gharial Mugger crocodile Nile crocodile Orinoco crocodile Saltwater crocodile Snakes & Lizards (Squamata) Adder Green anaconda Marine iguana Oriental whip snake Smooth snake Turtles & Tortoises (Testudines) Giant tortoise Green sea turtle Hawksbill sea turtle Leatherback sea turtle Olive ridley sea turtle