Belize's Lamanai Outpost Lodge, on the New River near the Lamanai Mayan archaeological site, offers a unique eco-adventure: tagging and researching endangered crocodiles
South Africa's Addo Elephant National Park has the largest concentration of elephants of any park worldwide, as well as lion, black rhinoceros, leopard, and Cape buffalo
Adventure travel tours to Uganda's Bwindi and Mgahinga National Parks take tourists on mountain gorilla treks and safaris. Fees contribute to education and preservation.