5 Animals That Are Almost Immortal

Summary: Some animals have amazing ways to cheat death! The immortal jellyfish can actually rewind its life cycle back to a baby state when it gets sick or hurt. Planarian flatworms have special stem cells that let them regrow their whole body from just a tiny piece. Hydras constantly renew their cells so they never show signs of aging. Turtles and tortoises don't really age like we do, thanks to a very slow metabolism and strong DNA repair. Finally, lobsters keep growing and stay strong because of a special youth enzyme called telomerase. However, lobsters usually die from the pure exhaustion of growing new, bigger shells.

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