The slow-moving porcupinefish has three defense mechanisms to prevent predators from enjoying a tasty meal. The fish can swallow water or air and inflate to about twice its size. It also has a set of sharp spines that stick outward when inflated. Finally, some species of porcupinefish are poisonous, with a neurotoxin at least 1,200 times more powerful than cyanide in their internal organs!
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