33. The Reef Stonefish
Domain: Coral reefs in the Indian and Pacific Oceans from the Great Barrier Reef to the Red Sea
The Reef Stonefish has 13 poisonous, needle-sharp spines and can blend into the terrain. Thus, divers can step on it. Indeed, even on land, the poison remains toxic for as long as a full day. Its painful sting can cause respiratory paralysis that can lead to heart failure. The after effects can particularly damage the kidneys.
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