The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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The octopus does not have a blind spot.
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The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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In Australia, there are spiders big enough to eat snakes.
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