An archipelago is a grouping or chain of islands that are oftentimes remote and isolated in bodies of water. The animal and plant life found in an isolated archipelago environment can be very unique from any other place in the world. Because of this, many biologists, botanists and other scientists have found them compelling places to study. Among the most ancient animals are sea turtles and tortoises which are oftentimes found in many archipelagos. In fact, the Galapagos Archipelago derived its name from the old Spanish word for tortoise. Sea turtles and tortoises are part of the reptile family. The main difference between them is the retractable extremities of the tortoises while the sea turtles use their extremities like fins.