system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5, How is the immortal jellyfish immortal, and why is it not a major point of research?
gpt
I’m gonna use an vague analogy but hopefully this makes sense: imagine a caterpillar that grows into a cocoon which births a butterfly, now when the butterfly is at the end of its life cycle, it sheds all the parts that make it a butterfly and become a caterpillar again repeating the cycle.