The spiny pufferfish, also known as Diodon holocanthus, is a marine fish recognized for its unique appearance and defensive adaptations. It has a rounded body covered in sharp spines that can be raised when the fish feels threatened. This ability to inflate its body by swallowing water or air makes it difficult for predators to consume. These fish are typically found in warm, shallow waters of tropical and subtropical oceans. Spiny pufferfish are known for their diet, which mainly consists of coral, crustaceans, and sea urchins. Despite their appealing look, they contain toxins that can be harmful if eaten, making them a risky choice for predators.