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What animal has the longest lifespan?
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The ocean quahog is a fist-size clam that can live to be 500 years or older. Some researchers believe the sturdy quahog's secret to a long life is its ability to protect its proteins from damage.

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The animal with the longest lifespan is the Green Shark. They have the longest known life span of all vertebrates. They have been recorded to have lived for about 300 to 500 years. They are found in the North Atlantic and Artic oceans.
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The animal with the longest lifespan is the bowhead whale. Bowhead whales can live up to 200 years, making them the longest-living mammal on Earth.
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The Greenland shark has the longest known life span of all vertebrates, estimated to be between 300 and 500 years. Found in the North Atlantic and Arctic Oceans, the species can reach an astonishing 21 feet in length and mostly eats fish, but has been spotted hunting seals.
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The ocean quahog is a fist-size clam that can live to be 500 years or older. Some researchers believe the sturdy quahog's secret to a long life is its ability to protect its proteins from damage.
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The ocean quahog is a fist-size clam that can live to be 500 years or older. Some researchers believe the sturdy quahog's secret to a long life is its ability to protect its proteins from damage nature
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The animal that has the longest lifespan is the Turritopsis dohrnii, also known as the "immortal jellyfish". This species of jellyfish is capable of reverting back to its juvenile state after reaching maturity, thus allowing it to potentially live forever. While it is not clear exactly how long these jellyfish can live, they have been observed to go through this process multiple times and can theoretically live indefinitely under the right conditions. However, it should be noted that many factors can affect the lifespan of an individual jellyfish, and their lifespan in the wild is likely to be much shorter than their maximum potential lifespan.

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Ocean quahog clam (Arctica islandica): 507 years old The individual animal that holds the confirmed record for the longest-lived is a clam from Iceland, found off the coast of the island nation in 2006, which was 507 years old, calculated by counting the annual growth bands in its shell.
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