In theory, it is possible to use synthetic biology to create a creature that is harmless in a particular environment but destructive in other environments. Synthetic biology can design and transform organisms, and give organisms specific functions and characteristics through editing genes and other means. However, such an idea faces many huge challenges and risks, including but not limited to the following aspects： 1. **Ethical considerations**: It may cause serious ethical disputes and violate basic bioethics and safety principles. 2. **Biosafety risks**: It may lead to uncontrollable biological spread and cause incalculable harm to the ecological environment and human health. 3. **Technical difficulty**: It is an extremely complex technical problem to accurately control the behavior of organisms in different environments and ensure their stability. In view of these risks and challenges, there are strict international regulations and regulations to restrict the research and application of synthetic biology to prevent the emergence and abuse of such dangerous organisms.