Synthetic organisms are living entities created through artificial means, often by modifying existing organisms' genetic material. Scientists use techniques like genetic engineering and synthetic biology to design these organisms for specific purposes, such as producing medicines or biofuels. These organisms can be bacteria, plants, or even animals, and they are engineered to exhibit traits that do not occur naturally. The goal is to harness their capabilities for beneficial applications, while also studying the implications of creating life forms that are not found in nature.