The narwhals usually lives in the polar sea, which includes the sea of the Arctic waters around Canada, Greenland, Norway, and Russia. The biome they live is called tundra. This biome is the coldest biome in the world, it's in the polar climate zone. The weather is usually freezing and in negative temperatures almost all the time. (summer temperatures average 0 C, while winter temperatures can average for -40 C) The reason that the narwhals don't have a nest or home is because they live in water. So according to worldwildlife.com, narwhals don't have a permanent home. They can also sleep while they are swimming. Narwhals live in the tundra sea area, which is

full of ice. However, the polar area is facing danger currently right now, because of the global warming! Global warming is a huge disaster where humans burning fossil fuel is making the earth became hotter and hotter, and let the environment system broke. If the environment was broke, the animals will extinct. Which includes narwhal.