Biology Questions

Do Lobsters Ever Die If Left Alone In The Wild?

Last Updated: Jun 12, 2021

Do Lobsters Die? Sorry to disappoint you, but in contrast to all scientific hoaxes circulating online, lobsters actually die. These organisms can certainly do keep growing until they die. Check out below.

Table of Contents

Lobster Lifespan By Types
Do Lobsters Die?
Lobster Lifespan – Biological Explanation
Aging Process in Lobsters

Lobster Lifespan By TypesHere are the studied lobster lifespan by their species types:

Lobster Type	Binomial Name	Lifespan
European Lobster	Homarus gammarus	Males: average 31 years, maximum 42 ± 5 years. Females: average 54 years, maximum 72 ± 9 years.
American Lobster	Homarus americanus	Average life span in the wild: 50-100 years.
Northwest Lobster	Metanephrops australiensis	Maximum lifespan is 10 to 12 years.
Norway lobster	Nephrops norvegicus	Males: 12 years. Females: 30 years.
Rosy Lobsterette	Nephropsis rosea	About 45-50 years in the wild.
Japanese Lobster	Metanephrops japonicus	Exact lifespan is yet to be recorded.
Cape lobster	Homarus capensis	Exact lifespan is yet to be recorded.
Patagonian Lobsterette	Thymops birsteini	Exact lifespan is yet to be recorded.
Atlantic Deep-water Lobster	Acanthacaris caeca	Exact lifespan is yet to be recorded.

Suggested Reading: What do lobsters eat?

Do Lobsters Die?

Most living organisms grow old and eventually die. However, there are a few plant and animal species that appear not to feel the pressure of time, and not exhibit the signs of aging that much. These organisms are the so-called “biologically immortal” organisms.

However, quite contrary as it might seem, these organisms have actually finite lifespan. A lot of factors like natural catastrophes, disease, or predation can kill them. But unlike other organisms, they do not die simply because of senility.

To grow, lobsters undergo a process called molting where they shed their exoskeleton from time to time. In general, a larger body means an older lobster. The video below depicts the life cycle of lobsters.

Scientific studies showed that in the wild, an average male lobster could live up to 31 years while a female one can survive up to 54 years. However, some tough species like the American lobster (Homarus americanus) can live up to 140 years!

The age of these lobsters was approximated through the measurement of the amounts of neuro lipofuscin, a pigment that is gradually deposited in the lobsters’ brain.
Scientists also are looking at the possibility of approximating the age of these lobsters via their exoskeleton growth band deposits.

Lobster Lifespan – Biological Explanation

lobster lifespan According to the marine biologist studies, lobsters do not lose fertility (i.e., ability to make offsprings) as they become old, unlike humans. Interestingly, the older lobsters may be extra fertile than growing lobsters.

This extra fertile power in older lobsters will not make them immortal. However, they die at a shell molt at the older age.

It was scientifically discovered that their secret to their longer lifespan might be due to an enzyme called telomerase. This enzyme restores long repeated sections of dna sequences in the form of “TTAGGG” (repeating) at the edges of chromosomes, which is known as telomeres.

Most vertebrates show the telomerase enzymes during embryonic stages. However, they are absent from the adolescent stage.

Surprisingly, unlike vertebrates, lobsters express telomerase as adults through their most tissues, which is the secret their longer lifespan.

Contrary to conventional thinking, lobsters are not immortal. Lobsters grow by molting which requires much energy, and the larger the shell, the more energy is required.

Ultimately, the lobster will die from fatigue during a molt. Aged lobsters are also known to stop molting like menopause in women, which means that the shell will eventually become broken or infected and they die.

Aging Process in Lobsters

Scientifically speaking, lobsters cannot live forever, but they handle it in a way that makes it appear to be almost immortal. Lobsters can display no signs of aging such as loss of appetite, decreasing reproductive capacity, changing metabolism, and decrease in physical strength.

This very slow aging in lobsters is highly attributed to their genes and the activity of the specific part of the DNA known as the telomere. Normally during cell division, the telomeres shorten because replication cannot reach until the end of the chromosome.
However, the shortening of telomeres in lobster DNA can be delayed because of the presence of an enzyme called telomerase. Scientific studies revealed that this enzyme is found to be in all of their organs and generally lobsters can continuously produce this even at adulthood, enabling them to live longer technically.

But come to think of it. Just because these organisms can potentially delay aging and molt until they die, doesn’t mean that’s always the case. Old lobsters also lose the machinery to produce metabolic energy to continue the process. And as alluded to earlier, starvation, natural calamities, disease, and predation can also kill them.

In conclusion, lobsters can live a really long life. And when they die, lobsters do only because of external factors.

So the next time someone asks you whether lobsters die, tell them they do, but only because of their exhaustion from molting over and over again.

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BioExplorer.net. (2024, October 14). Do Lobsters Ever Die If Left Alone In The Wild?. Bio Explorer. https://www.bioexplorer.net/do-lobsters-die.html/.

BioExplorer.net. "Do Lobsters Ever Die If Left Alone In The Wild?" Bio Explorer, 14 October 2024, https://www.bioexplorer.net/do-lobsters-die.html/.

BioExplorer.net. "Do Lobsters Ever Die If Left Alone In The Wild?" Bio Explorer, October 14 2024. https://www.bioexplorer.net/do-lobsters-die.html/.

Key References

“BBC – Earth – The animals and plants that can live forever”. Accessed December 07, 2017. Link.
“Can Lobsters Really Not Die of Old Age?”. Accessed December 07, 2017. Link.
“The Long And Happy Lives Of Lobsters : NPR”. Accessed December 07, 2017. Link.
“Longevity of lobsters is linked to ubiquitous telomerase expression. – PubMed – NCBI”. Accessed September 15, 2018. Link.
“Human Telomerase and Its Regulation”. Accessed September 15, 2018. Link.
“An Error Occurred Setting Your User Cookie”. Accessed September 15, 2018. Link.
“Ageing, longevity, and life history of Homarus americanus”. Accessed September 15, 2018. Link.
“Norway lobster (Nephrops norvegicus) | Fisheries”. Accessed September 15, 2018. Link.
“Metanephrops australiensis (Northwest Lobster)”. Accessed September 15, 2018. Link.