Greenland sharks are seven meters in length and live at 500 meters deep. They move very slowly, as they do not exceed 0.34 m/s, but in their stomachs they have found chipirones and seals. Scientists don't understand how an animal that moves so slowly can catch its prey.

It was suspected that at the time of catching the prey, the shark was accelerating its speed. However, this hypothesis has been disproved by speed meters placed on the back of several individuals. So how do you catch the dams? For the time being, the only hypothesis that has not been proven is that he hunts while sleeping. Seals, for example, often sleep in the water to prevent them from being captured by white bears.