The immortal jellyfish can repeat this life cycle reversal indefinitely, which helps it survive in changing environments and unfavorable conditions. Do Immortal Jellyfish Live Forever? In reality ...

A closeup shot of a glowing blue jellyfish in black water. One species stands out for its extraordinary ability: Turritopsis dohrnii, also known as the immortal jellyfish. This fingernail-sized ...

A cycle of rebirth The ability ... clock is what makes it immortal. The vulnerabilities of Turritopsis dohrnii Regardless of its ability to reset, the jellyfish isn’t eternal.