Researchers have found that elusive Greenland shark can live up to 400 years in the depths of the Arctic Ocean.
In perspective, this case proves that sharks living today have lived through the Mayflower brought the first pilgrims to America or when Isaac Newton developed the first theory of gravity. By analyzing 28 female sharks in Greenland proved that the oldest copy was at least 272 years and not more than 512 years and is one of the oldest animals with a backbone known to mankind. Researchers have predicted that the female was about 390 years old when he was captured accidentally by a research vessel.
Before this, the longest vertebrate whale head was arched, which can live up to 211 years.
In the new study it has suggested that the Greenland shark can survive two or more years than whale head arched. Future research could reveal secrets scientific world slowing the aging process of humans. Greenland shark is a carnivore that lives in the freezing waters of the Arctic Ocean. Shark increase over five meters in length and swim slowly in the deep, icy, only coming to the surface to feed a big fish or a marine mammal, such as seals.
These sharks can live a longer period of time due to slow growth process (one centimeter per year), but very difficult to see, researchers have never been sure of this theory.
,, We have expected that sharks must be very old, '' said principal investigator, Julius Nielsen, University of Copenhagen, Denmark. ,, But not long before I knew, of course was a big surprise to discover that it is the longest vertebrate, '' he added.
To make this claim, researchers analyzed 28 female Greenland shark, caught between 2010 and 2013. The normal aging process of the Greenland shark is not the same as other vertebrate Since we have these layers calcified tissues increased. Nielsen discovered a series of proteins crystallized in the eye, which were formed during their life.
The team tried not to give too many figures, but said that two of the older subjects were between 335 +/- 392 +/- 75 and 120 years. Which means that the oldest female was around 272-512 years.
The discovery has both positive and negative aspects, the negative aspect is that they reach sexual maturity at the age of 150 years, which means that any shark killed by fishermen or climate change can be very difficult to replace.
,, Our results have shown that the Greenland shark is the longest vertebrate, our concerns are growing because species must be preserved, '' team concludes.
The good news is that by studying the life cycle of these species, researchers can conserve better in the future.
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Source: Science Alert
The ghost vessel has been the subject of numerous novels and movies.
On 11 October 1775 off the west coast of Greenland, the crew of the vessel revealed Herald,, Octavius ghost ship ". The sailors reported when they found the frozen corpses on board the ship, almost perfectly preserved, 28 sailors. More Besides, the captain was found in his cabin, sitting at the table writing with a feather in his hand. the same place was found the body of a woman, that of a child and of a sailor.
When they left the wreck, vessel Herald sailors took with them only the captain's logbook. Last mentioned in the document: November 11th 1762. Octavius was in the Arctic for nearly 13 years.
Foto:abovetopsecret.com
There are many legends about the sinking spent in Greenland. One legend states that the vessel had left England in 1761 and arrived in the East next year. On return, the captain chose to travel along the northern coast of North America, the so-called,, Northwest Passage, "which unites the Atlantic Ocean with the Pacific Ocean. The ship never arrived at their destination, however, is sighted for the last time at 75 ° N 160 ° W, approximately 400 kilometers north of Barrow in Alaska.
In another legend, published in 1905, the vessel is called,, Gloriana "and the route through the Northwest Passage is not mentioned at all. Another story, published in the Gazette December 13, 1828,, The Ariel: A Literary Critical Gazette and "does not contain even a reference to the name of the ghost ship.
Foto:abovetopsecret.com
Octavius wreck myth inspired, over time, many writers and filmmakers. For example, French artist Jacques Tardi graphic novel published in 1974,, Ice Demon ", which takes place in 1889, the vessel,, L'Anjou" in the Barents Sea.
Sailors are, at some point, a ghost ship, The Iceland,, loafer "and on board, all crew members frozen. Immediately after the discovery, the vessel,, L'Anjou" exlpodează and sailors remain captive ship -ghost.
Ship appears in the video game Assassin's Creed III, when the main character, Connor, looking for clues as to where is the lost treasure of Captain Kidd.
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