The pufferfish, also known as fugu, is a unique marine creature famous for its ability to inflate its body when threatened. This fascinating fish can expand to several times its normal size, making it harder for predators to swallow. Pufferfish are found in warm waters around the world, often hiding among coral reefs and seagrass beds. One of the most interesting aspects of pufferfish is their toxicity. Many species contain a potent toxin called tetrodotoxin, which can be deadly to humans and other animals. Despite this danger, some people enjoy eating fugu, but it must be prepared by specially trained chefs to ensure safety.