But it was on the Galapagos Islands off the coast of Ecuador that Darwin found creatures that made him wonder about how species develop and change. There, he saw giant tortoises and noted that the reptiles were different on each island. He collected birds, each with different beaks. Later, after he had returned to England, he would be shocked to find that these very different birds were all finches. Darwin found lizards called iguanas that lived on land and ones that fed in the sea. Darwin noted that all these species were similar to those found in South America. But, they all had differences, or adaptations,that helped them survive in the environment of the Galapagos Islands