Quick answer
Wild grey seals typically live around 35 years, though predation, disease, and habitat quality shift the average.
Lifespan in the wild
Most grey seals reach roughly 35 years under natural conditions. 25–35 years in the wild
Factors affecting longevity
Predators, disease, food scarcity, and human pressures all shape survival. Males and females may differ in average lifespan.
In captivity or as pets
With veterinary care and steady nutrition, grey seals sometimes live longer than wild averages — though wild longevity reflects natural ecology.
Oldest recorded individuals
Long-lived grey seals are rare in the wild; research and zoo records help set upper limits for the species.
Sources
FAQs
How long do grey seals live in the wild?
About 35 years on average.
What affects grey seal lifespan?
Predation, habitat quality, disease, and food availability.
Do grey seals live longer in captivity?
Often yes, when nutrition and healthcare are consistent.
How can you tell a young grey seal from an adult?
Size, markings, and behaviour change with age — see our full profile for detail.