Most sharks live around 20–30 years, but some species can survive for centuries, with the Greenland shark likely reaching at least 250 years and possibly over 400–500 years, making it the longest‑lived vertebrate known. A few large species like whale sharks and great white sharks can commonly live many decades, sometimes close to or above a century.

Typical shark lifespans

Most commonly known sharks fall into a few broad ranges.

  • Many medium‑sized sharks, such as blue sharks and some reef species, tend to live about 15–25 years in the wild.
  • Larger predators like hammerheads, tiger sharks, and many great whites are often estimated in the 30–70 year range depending on the population studied.
  • In general, adults of many species spend a few decades “patrolling” their home waters once fully grown.

Record holders and long‑lived species

A few sharks are extreme outliers in terms of longevity.

  • Greenland sharks in cold northern oceans appear to be the champions, with carbon‑dating estimates suggesting lifespans of at least about 250 years and potentially over 500 years in rare individuals.
  • Whale sharks, the largest living fish, are estimated to live roughly 70–100 years, with some newer work suggesting they might reach around 120–130 years.
  • Some smaller deep‑sea species, like spiny dogfish, can also reach or approach a century under favorable conditions.

Why it’s hard to know

Pinning down a shark’s exact age is scientifically tricky, so all numbers are estimates rather than precise birthdays.

  • Unlike trees, sharks do not leave perfectly regular “rings” that can be counted reliably throughout life; growth bands in vertebrae or other tissues can slow or change as they age.
  • For very slow‑growing species such as Greenland sharks, researchers use techniques like radiocarbon dating of eye tissues, which yields broad age ranges (for example, 272–512 years for a large female), so scientists give conservative minimums like “at least 250 years.”

Captivity vs. wild

Where a shark lives also affects how long it survives.

  • Sharks in captivity usually die younger than their wild counterparts, partly due to stress, space limits, and difficulty matching natural diets and migratory behavior.
  • In the wild, threats such as fishing, habitat loss, and pollution can cut lives short well below the biological maximum, even for species capable of living many decades.

Information gathered from public forums or data available on the internet and portrayed here.