The ocean is home to some of the most fascinating creatures on Earth, but none are as ... an unparalleled phenomenon in the animal kingdom. Why don't Immortal Jellyfish age? Turritopsis dohrnii ...

But some animals on Earth can live for hundreds or even thousands ... So, theoretically, hydras are "immortal" under ideal conditions. However, natural conditions are not always ideal, and hydras ...

Also known as ctenophores and considered one of the most ancient animal lineages ... ironically, as the immortal jellyfish.

Even more astonishing, some jellyfish species, like Turritopsis dohrnii, are biologically immortal ... Fund for Animal Welfare, here are the top 10 longest-living creatures on Earth.

For example, jellyfish, including immortal ones, are prey to other animals, such as fish and turtles ... that ships are responsible for widely dispersing the creatures through Earth's oceans. The ...

While some animals, given the right circumstances, could be considered immortal, lobsters are not among them. Like many other decapod - ten-footed - crustaceans, lobsters continue to grow throughout ...