Tortoise eggs arre hatched here and protected from predation. Humans have introduced rats, cats and dogs which have become feral and prey on young tortoises. The tortoises are raised till about 10 years old then released to the environment. The largest island, Isabella, has 5 different species of tortoises it was formed by 5 different volcanos. There is some evidence to suggest that a unique species evolved on each volcano and then the continuing lava flows brought them all together.
