Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
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Sharks, like other fish, have their reproductive organs in their chests.
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The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
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Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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