The oldest hermit crab on record is Jonathan Livingston Crab, a purple pincher bought in 1976: verified at more than 42 years in a peer-reviewed review (Vogt 2019) and reported by his owner to have lived 45.5 years. The oldest hermit crab fossils date to the Early Jurassic, about 185 million years ago; the oldest found inside a shell is a claw in an ammonite from Banz, Germany.
The oldest hermit crab ever reported
The oldest hermit crab on record is Jonathan Livingston Crab, a purple pincher (Coenobita clypeatus) bought by Carol Ann Ormes at a shop in Ocean City, Maryland, in the summer of 1976 (Atlas Obscura). He is not just an internet legend: Günter Vogt's 2019 review of crustacean longevity in the journal Nauplius names him "the oldest decapod in captivity", more than 42 years old and still alive in December 2018. That makes him the best-documented oldest pet hermit crab in the world.
His story was followed for decades. A Shell Point retirement community press release from July 2005 reported that Jonathan and his companion, Crab Kate, would "turn 29 years old in August". Atlas Obscura's 2016 article, "The 40-Year-Old Hermit Crab", called him "the world's most venerable pet hermit crab". Crab Street Journal, citing Ormes's own care record, reports that Jonathan lived 45.5 years in her care. Because nobody knows how old he was when he was bought, his true age was higher still.
| Crab | Age | Status | Source and notes |
|---|---|---|---|
| Jonathan Livingston Crab (purple pincher) | More than 42 years | Verified — peer-reviewed review | Bought summer 1976, still alive December 2018 (Vogt 2019) |
| Jonathan Livingston Crab — final age | 45.5 years in his owner's care | Reported — owner's care record | Shared by Crab Street Journal; age when bought unknown |
| Crab Kate (purple pincher) | 35 or 38 years | Reported | Atlas Obscura: 35 years, to 2011; Crab Street Journal: 38 years |
| Male purple pincher in a study | 11 years in captivity | Published study | Chace 1972, Crustaceana (cited by Crab Street Journal) |
| Forum and social-media claims | Various | Anecdote | Owner reports without documents — not used as records |
Two details are often missed. First, both crabs were female — Ormes told Atlas Obscura she only found out as they got older, and kept the names. Second, the sources disagree on Crab Kate: Atlas Obscura says she was with Ormes for 35 years until she died in 2011, while Crab Street Journal gives 38 years. We show both.
The 40 year old hermit crab and other claims
The famous 40 year old hermit crab of the headlines is Jonathan. Other long-lived crabs appear in forum threads and social posts, sometimes with ages over 40, but we found none confirmed by a study, a review or a news report with dates, so we treat them as owner anecdotes. Guinness World Records doesn't appear to list a hermit crab category at all.
The oldest living hermit crab today
Who is the oldest living hermit crab right now? We don't know, and nor does anyone else officially. Jonathan's last documented check-in was in 2018 and his owner's record covers 45.5 years, so he is no longer the living record holder. No current claimant has been verified by a review, a zoo or a news organisation. If you think your crab is a contender, the comparison tool above shows how close it is.
Can hermit crabs really live 30–40 years?
Can hermit crabs live 30 years? Yes — but it's exceptional. The Smithsonian's National Zoo says land hermit crabs "can live to be 40 years old", and Jonathan proves a pet can go beyond that. Yet vets describe the usual good-care range as 10–20+ years (Tree of Life Exotic Pet Medical Center), and PetMD says 10+ years. A 30-year-old crab is twice the 15-year middle of that range.
So how old do hermit crabs get? It depends on what you count:
- Most pets: far less than their potential — often weeks to a few years in poor conditions.
- Well-kept pets: about 10–20 years or more.
- Exceptional pets: 30–40+ years, with one documented case past 42.
- Wild strawberry crabs: up to 25–30 years (Animal Diversity Web).
- Their giant relative, the coconut crab: up to about 70 years, estimated from growth models (Vogt 2019) — a different animal, but the same land-crab family.
In the comparison tool, a 20-year-old purple pincher is at 133% of a typical lifespan but only 44% of the way to Jonathan's 45.5 years; a 30-year-old is at 66%, and a 40-year-old at 88%. Crab Street Journal warns against treating such cases as normal: an exceptional individual "is not the same thing as an average lifespan or a guaranteed maximum lifespan".
The oldest hermit crab fossils
Hermit crabs are ancient. The oldest hermit crab fossil evidence dates to the Early Jurassic: a 2022 review by René Fraaije and colleagues in Geodiversitas traces how hermit crabs changed "between Early Jurassic times (c. 185 million years ago) and the present day". Fossil hermit crabs are mostly found as claws and carapace pieces, because the soft abdomen rarely fossilises.
| Find | Age | Where | Source |
|---|---|---|---|
| Oldest hermit crab fossils | Early Jurassic, about 185 million years ago | Europe | Fraaije et al. 2022 trace hermit crab evolution from this time |
| Claw inside an ammonite shell | Late Pliensbachian (Early Jurassic) | Banz, southern Germany | Jagt et al. 2006: the earliest hermit crab found inside a shell |
| Palaeopagurus vandenengeli inside an ammonite | Hauterivian (Early Cretaceous), roughly 130 million years ago | Speeton, Yorkshire, UK | Fraaije 2003: published as "the oldest in situ hermit crab" |
The Speeton hermit crab
The best-known find is from Speeton, on the Yorkshire coast. In 2003 René Fraaije described an Early Cretaceous (Hauterivian) hermit crab "perfectly preserved within an ammonite" — the species Palaeopagurus vandenengeli, inside the coiled shell of a simbirskitine ammonite. His paper in Palaeontology was titled "The oldest in situ hermit crab", meaning the oldest found still inside the shell it lived in.
That title has since been beaten. In 2006 John Jagt and colleagues reported a hermit crab claw, with the imprint of its other claw, preserved inside an amaltheid ammonite from the late Pliensbachian (Early Jurassic) of Banz in southern Germany — tens of millions of years older than Speeton.
Ammonites before snail shells
Both finds sit inside ammonites, not snail shells. Fraaije argued that palaeontologists had been looking at "the wrong class of molluscs": early hermit crabs probably lived in ammonite shells, and the shift from ammonites to gastropods during the Cretaceous changed the shape of the claws hermit crabs use to block their shell openings. Today's land hermit crabs, all in the genus Coenobita, still depend completely on borrowed shells.
What the longest-lived crabs had in common
Only one long-lived pair is documented in any detail, so we can only report what their owner and the articles describe — not prove what made the difference. Here is what the sources say about Jonathan and Kate:
- Humidity first: asked for her secret, Ormes said that because the crabs came from a humid climate, "I figured I should create a tank that was humid for them". She believed dry, sandy tanks shorten lives because the exoskeleton dries and cracks (Shell Point, 2005).
- A glass tank instead of the wire cage: she moved Jonathan out of his shop cage early; Atlas Obscura notes those cages are "pretty much certain death" because they don't hold moisture.
- Company: Jonathan was never kept alone — Crab Kate joined him soon after he was bought.
- Protected molts: Jonathan molted in a separate molting tub under a slate "roof", with a piece of eggshell to eat afterwards (Atlas Obscura, 2014 email).
- New shells as they grew: friends recall shell-shopping trips to pick "possible new shells" for the pair (Atlas Obscura).
- Careful observation: Ormes, a hospital microbiologist for 38 years, checked heat and moisture by hand before gauges were sold for pets.
These points match what vets recommend today: stable humidity, warmth, deep substrate, company and spare shells. Our hermit crab care checklist sets out the modern targets with sources.
How this comparison tool works
Enter your crab's species and your best estimate of its age. The tool uses the same typical lifespan as our hermit crab lifespan calculator — 10–20 years with good care, average 15 — so both pages give the same number for the same crab. It then compares your crab with two records, clearly labelled: the verified figure of more than 42 years from Vogt's peer-reviewed review, and the reported 45.5 years from the owner's record. A comparison bar shows all four ages side by side.
No species-specific records exist for Ecuadorian or strawberry crabs, so every species is compared with the same records. Ages above the reported record still give a result, with a note that your crab would be the oldest pet hermit crab ever reported. Ages above 70 years — longer than the coconut crab, the longest-lived member of the family — show an error.
Frequently asked questions
What is the oldest hermit crab ever?
Jonathan Livingston Crab, a purple pincher bought in 1976. A peer-reviewed review lists him at more than 42 years (Vogt 2019), and his owner's record says he lived 45.5 years in her care.
What is the oldest living hermit crab?
There's no verified current record holder. Jonathan Livingston Crab's last documented check was in 2018, and newer claims are unverified owner reports.
What is the oldest pet hermit crab?
Jonathan Livingston Crab, owned by Carol Ann Ormes — more than 42 years (verified) and 45.5 years (reported). His companion Crab Kate lived 35–38 years.
Is there a 40 year old hermit crab?
Yes — Jonathan Livingston Crab turned 40 in 2016, when Atlas Obscura wrote about him, and was still alive in December 2018 (Vogt 2019).
Can hermit crabs live 30 years?
Yes, but rarely. Jonathan and Crab Kate both passed 30, yet the usual good-care range is 10–20+ years (Tree of Life). In the wild, strawberry crabs reach up to 25–30 years (ADW).
How old do hermit crabs get?
Well-kept pets often reach 10–20 years or more; exceptional ones 30–40+. The Smithsonian's National Zoo says they can live to 40.
What is the oldest hermit crab fossil?
Hermit crab fossils go back to the Early Jurassic, about 185 million years ago (Fraaije et al. 2022). The oldest found inside a shell is a claw in an ammonite from Banz, Germany (Jagt et al. 2006).
What was the Speeton hermit crab?
Palaeopagurus vandenengeli, an Early Cretaceous hermit crab preserved inside an ammonite at Speeton, Yorkshire, described by René Fraaije in 2003.
Does Guinness have a record for the oldest hermit crab?
We couldn't find a Guinness World Records entry for a hermit crab. The best documentation is Vogt's 2019 peer-reviewed review.
Records change. "Verified" means documented in a peer-reviewed review; "reported" means an owner's record shared by a specialist site; forum claims are anecdotes. For your crab's health, talk to an exotic-animal vet.