The Greenland shark is one of the longest-living vertebrates on Earth, with scientific estimates suggesting that it can survive for 400 to 500 years. This extraordinary marine species may live for centuries, outlasting countless generations of humans.
Scientists used radiocarbon dating to estimate the ages of Greenland sharks, revealing that some individuals may have been born around the time the Mughal Empire was emerging in the Indian subcontinent in 1526. This means a Greenland shark swimming in the ocean today could have been alive when the Mughal Empire was founded.
Found in the icy waters of the North Atlantic and Arctic oceans, Greenland sharks inhabit some of the coldest and deepest marine environments. Their slow-moving lifestyle and remarkable longevity have made them a fascinating subject of scientific research.
One of the key factors behind their exceptional lifespan is believed to be their extremely slow metabolism, which is associated with the cold temperatures of their habitat. These conditions are thought to contribute to their slow growth and gradual development.
Greenland sharks grow at an estimated rate of around one centimetre per year and may not reach sexual maturity until approximately 150 years of age. Their development is so slow that they can spend more than a century before reaching reproductive adulthood.
They are also known for their remarkably slow swimming speed, averaging around one mile per hour. This sluggish movement has earned them the nickname “sleeper sharks.”
The Greenland shark offers a remarkable example of longevity in the natural world. Its slow growth, delayed maturity and adaptation to frigid waters demonstrate how life in extreme environments can follow a very different timeline from that of most other animals.
