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Unless threatened or injured, sharks are not as dangerous to humans as films like to show.
Surprisingly, sharks are one of the most approachable critters of the great ocean, to the point that trained swimmers can even swim alongside them. Sharks possess an advanced social structure and communicate frequently with other sharks, making friends and exchanging information.
During winter, bears stockpile food and hide themselves in safe, warm dens, spending most of their time resting or eating. While they hibernate, they do less activity and lower their body temperature to save energy as the weather outside gets too cold for regular activity. A normal hibernation period lasts around 80 days.