Dive in Fins

THE REMARKABLE LONGEVITY OF THE GREENLAND SHARK

The Greenland shark (Somniosus microcephalus) stands out as the longest‑living vertebrate known to science, with an estimated lifespan ranging from 250 to 500 years. Radiocarbon dating of eye lens proteins suggests that some individuals may reach ages close to 400 years, and possibly even approach the upper limit of five centuries.

This exceptional longevity is linked to several biological traits:

Extremely slow metabolism, driven by the frigid temperatures of Arctic and North Atlantic waters
Very slow growth rates, often less than one centimeter per year

Low activity levels, which reduce energy expenditure and cellular stress

Together, these factors allow the Greenland shark to persist for centuries in deep, cold marine environments, making it one of the most extraordinary examples of vertebrate aging in the natural world.

Always follow the rules and respect wildlife

https://www.facebook.com/share/p/17wMzbiGpZ/?mibextid=wwXIfrs

Robert Porter never expected to find out what a shark’s bite felt like until one clamped down on his head in the waters off Abaco.

What began as a routine spearfishing trip for him and his friends quickly spiraled into an emergency.

Read more about what happened here: dan.org/shark-bite-while-spearfishing-in-abaco.



Photos © Courtesy Robert Porter

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