These strange looking and fascinating creatures known as Pufferfish are found in tropical seas all over the world. Interestingly, they are the second most poisonous vertebrate on Earth! They use their extremely toxic poison, called tetrodotoxin, to kill their prey. Their poison is found in the fish’s skin, muscle tissue, liver, kidneys, and gonads. Shockingly, the pufferfish’s poison is over 1,000 times more poisonous than cyanide. Strangely enough, some chefs if Japan are able to cook the pufferfish. Some eat it as a delicacy.