Animals are pretty incredible. I mean, humans may be smart, but we're not naturally able to do

things like fly, breathe underwater, or lay an egg. And while we think we know almost everything

about the animals in our world, there are some that seem to defy Mother Nature herself with the

things they can do. From ravens that can talk like humans to lizards that can walk on water

like Jesus, it's time to take an examination of some of the most unbelievable things animals are

able to do. There are three certainties. Be amazed.

There are three certainties in this world, life, death, and taxes.

Although there's a small exception to that second rule, and its name is Turotopsis Dornai, a tiny species of jellyfish with a very special talent.

They can't die.

I'm being serious.

These jellyfish are one of the only species on Earth considered biologically immortal.

Unless they get gobbled up by a predator, these aptly nicknamed immortal jellyfish

will be swimming around till the end of time. Fully grown, they measure in it less than 0.2 inches

across, smaller than a standard pinky nail. But their size doesn't stop them from replenishing

any damaged cells through a process

called transdifferentiation.

When they get injured or hungry, they take a leap back in their development process and

amazingly regress to their juvenile polyp state.

The adult cells effectively turn back time to a younger form before budding and releasing baby jellyfish that are genetically identical to the injured adult.

Providing they can hang on to an essential part of their anatomy called the nerve center, which triggers the transdifferentiation process,

these jellyfish can keep on swimming forever and ever. You've heard of a

copycat, but have you heard of a copy octopus? Okay, that's not its real name. Scientists call it

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