As the ocean warms, a body of water called the Antarctic Polar Front—an upward movement of nutrient-rich sea that supports a huge abundance of marine life—is being pushed further south.

As the ocean warms, a body of water called the Antarctic Polar Front—an upward movement of the nutrient-rich sea that supports a huge abundance of marine life—is being pushed further south.

Swift and agile, Antarctic fur seals rely on their powerful front flippers to propel them through the water; smaller hind flippers help with steering.