Question

How are the Arctic and southern ocean different from the other ocean?

Answer 1

The Arctic ocean and southern ocean that are in the polar regions are a bit different from other oceans on Earth. There is often sea ice at their surface, especially during the winter months. And those chilly waters are home to some unique marine life. Seawater from polar regions can be denser than seawater from other places. This is because seawater in the polar oceans is cold, and this makes it denser. It can also become saltier than other seawater during the winter when sea ice freezes at the ocean surface removing some of the freshwater to make the ice, which concentrates the salts. The denser seawater sinks to the bottom of the ocean. It travels out of the polar regions in slow currents that travel around the bottom of the world’s oceans as part of the pattern of global ocean circulation called thermohaline circulation.