Fact Cafe
48

LOBSTERS ARE BIOLOGICALLY IMMORTAL! You Won't Believe How Long These Creatures Can Live!

Learn More

LOBSTERS ARE BIOLOGICALLY IMMORTAL! You Won't Believe How Long These Creatures Can Live! illustration
LOBSTERS ARE BIOLOGICALLY IMMORTAL! You Won't Believe How Long These Creatures Can Live!

Lobsters possess a remarkable biological trait that allows them to defy the typical aging process seen in most creatures. Unlike humans and many other animals, lobsters do not experience a decline in cellular function or an increased risk of death as they get older. This extraordinary longevity is largely attributed to a special enzyme called telomerase. In most organisms, each time a cell divides, the protective caps at the ends of chromosomes, known as telomeres, shorten. This shortening acts like a biological clock, eventually signaling cells to stop dividing or become inactive, leading to the signs of aging.

However, lobsters maintain a perpetual supply of telomerase throughout their lives, even into adulthood. This enzyme continuously repairs and restores the length of their telomeres, effectively preventing cellular senescence, or aging, across many of their tissues and organs. This constant cellular renewal allows them to keep growing and regenerating their bodies, including lost limbs, throughout their exceptionally long lifespans, with some individuals estimated to live over a century.

Despite this biological advantage, lobsters are not truly immortal in the everyday sense. Their continuous growth presents a unique challenge: they must regularly shed their hard exoskeletons in a process called molting. As a lobster grows larger, each molt demands an increasingly vast amount of energy. Eventually, an older, larger lobster may simply lack the metabolic reserves to complete this strenuous process, leading to death from exhaustion. Furthermore, if they stop molting, their old shells can become damaged or infected, making them vulnerable to disease. Therefore, while they don't age internally like other animals, external factors and the very mechanism of their growth ultimately limit their time.