What is the difference between Arctic and Antarctic?

The areas around the north and the south poles are called the Arctic and the Antarctic regions, respectively. Both these regions are cold and are covered with ice. But there is a big difference between  the two: there is sea water below the Arctic ice cap, and there is rocky mainland below the Antarctic ice cap. The fauna is also not the same. Penguins live in the Antarctic and are not found in the north pole. Many seabirds such as the albatross also breed in the Antarctic. In the Arctic, which ranges from Scandinavia to Siberia via Greenland, North Canada, and Alaska, polar bears and a species of seals with huge tusks, called the walrus, are found. Huge whales swim off the coast of both the polar regions. They feed on krill and are famous for their hunting technique.