These are the icy regions at the poles of the Earth, where the sea is covered in an ice sheet that can be several meters thick. They are home to a surprising amount of marine life, including whales, seals, and polar bears.
These are the icy regions at the poles of the Earth, where the sea is covered in an ice sheet that can be several meters thick. They are home to a surprising amount of marine life, including whales, seals, and polar bears.