Deadly pufferfish
A pufferfish underwater at Moorea Island,
French Polynesia. There are more than 120 species of pufferfish, and most of
them contain a substance known as tetrodotoxin, making them lethal to
predators. The toxin is 1,200 times more poisonous than cyanide — the amount of
toxin in one pufferfish could kill up to 30 people, according to National
Geographic.
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