WHEN SHARKS ATTACK

· Greenland sharks is the longest-lived vertebrate on earth. These animals can live at least 272 years – and possibly to 500.

· They do not reproduce until they are around 150 years old.

· Their skin is incredibly toxic, because it contains high levels of urea and an organic compound called TMAO, which together work as antifreeze.

· The Greenland shark is the only true subarctic shark. It is found around Greenland, but it also exists in other parts of the North Atlantic, such as near Iceland.