Who would have thought that fish are soamazing creatures that live much longer than humans? In early August, we wrote that a 112-year-old fish was found in the waters of the US state of South Dakota that survived two World Wars. Scientists nicknamed her the oldest fish in the world but seem to be very wrong. In the waters of Greenland, a huge shark was caught, which, according to scientists, was born back in 1505. It turns out that she swam in cold waters during the time of Ivan the Terrible?
Fish lifespan reallyamazing. It is known that in the wild, salmon can live up to 15 years, and sturgeons can even safely swim until they reach the age of 100. But these are still flowers - there is a legend that in 1794 Moscow fishermen managed to catch the pike that lived during the reign of Boris Godunov, that is, more than 200 years ago. But, compared to a shark caught in Greenland, even this legendary fish seems to be a teenager.
- 1 The most long-lived sharks
- 2 How to find out how old a shark is?
- 3 The oldest shark in the world
- 4 What is the secret to longevity of sharks?
The most long-lived sharks
Caught predator refers to a species of Greenlandpolar sharks. They occupy the highest position in the food chain and prey on fish, small sharks and seals. At the same time, they are the slowest sharks, because the maximum speed of their swimming is only 2.7 kilometers per hour. According to scientists, this species of sharks does not chase prey, but simply watches over it.
Greenland polar shark
It’s also known that these sharks are not averseto enjoy carrion - scientists learned about this by opening the bodies of some individuals. They were clearly surprised to find the remains of polar bears and reindeer in the abdomen of sharks. Predators probably find this kind of food due to their sharp scent - rotting meat emits a harsher smell than regular blood.
Did you know what the smallest shark in the world looks like?
How to find out how old a shark is?
If you believe the results of scientific research,Greenland polar sharks really live very long, at least 200 years. We can assume that they are champions in life expectancy among vertebrates. You can determine the age of the Greenland shark by the length of its body - as a rule, in one year, representatives of this species grow by a centimeter.
Greenland shark fishing
The oldest shark in the world
The length of the caught Greenland shark is 5.4meters. Based on the fact that sharks of this species grow by a centimeter every year, scientists decided that this individual was born in 1505. In these times, Henry VIII was the king of England, and Ivan the Terrible ruled in Russia. However, it is likely that scientists make a mistake, because other methods for determining the age of the shark showed a different result.
Just look at this shark - she obviously has seen a lot in life.
In particular, we are talking about radiocarbon analysis,with the help of which archaeologists can quite accurately determine the age of fossil artifacts, and paleontologists - the period of life of extinct animals. The results of radiocarbon dating showed that the shark was born about 272 years ago. At the same time, the body length of the shark indicates 512 years of age. To be honest, much more is believed in the results of radiocarbon analysis, and what method do you trust more, write in our Telegram chat.
What is the secret to longevity of sharks?
No matter how old the shark is, it’s allequally is a long-liver. At the moment, scientists are trying to find out exactly what features of the body of sharks allow them to live for such a long time. Earlier, Greenland sharks were thought to live hundreds of years due to slow metabolism. This is hard to believe the first time, but females reach puberty at only 150 years old.
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Fish are truly amazing creatures. Some species, if necessary, can even change their gender. For example, the blue-headed thalasomas do this — if there is no male in their flock, one of the females changes color during the week and begins to behave like a male.