Iguanas can be found in Galapagos Islands, and this is one of the most unique types of reptiles. They bear a close resemblance to lizards, and males can reach 4 feet in length. Land iguanas feature lighter coloring and a little larger size of the body. Actually, there are many varieties of Iguanas in the islands. Iguanas are extremely vulnerable to predators, because they evolved in the environment with few predators.