Polar bear

It is the largest member of the carnivorous mammals. It spends almost its entire life on the move, searching for food. This massive, seemingly sluggish animal is a highly skilled fisherman, and when hunting, it relentlessly pursues its prey. It is extremely well adapted to the cold of the Arctic. Its thick fur and subcutaneous layer of fat provide thermal insulation, serving not only as mechanical protection but also as a reserve food source during periods when prey is scarce. Most polar bears almost never set foot on actual land; the majority spend their entire lives on the frozen waters of the Arctic, on the drifting ice fields.