The Immortal Jellyfish: Meet the “Benjamin Button” of the sea: the Turritopsis dohrnii, commonly known as the “immortal jellyfish.” Why the fancy name? When this jellyfish faces danger or gets old, it can revert to its earlier stage as a baby jelly (a polyp) and start its life cycle all over again! So, in theory, it could live forever. This reminds us of the importance of self-renewal and adaptation. While we may not physically return to our younger selves, we possess the ability to mentally and emotionally “start over” at any point in our lives.