Tetraodontiformes is an order of marine animals that includes species such as pufferfish, triggerfish, and sunfish. These fish are characterized by their unique body shapes, often featuring a rounded or flattened appearance. Many members of this order have specialized adaptations, such as the ability to inflate their bodies as a defense mechanism. This order is known for its diverse range of species, with over 300 recognized. Tetraodontiformes are found in various marine environments, from coral reefs to open oceans. Some species, like the pufferfish, are also notable for their production of toxins, which can deter predators.