The ocean around Antarctica is changing in unexpected ways. Since 2015, sea ice surrounding the frozen continent has been retreating at a record pace, with losses comparable tothe size of Greenland. What’s more surprising is that new satellite data reveals an unsettling trend: the ocean’s surface is becoming saltier,

Antarctic sea ice is more than just a platform for penguins. The sea ice's high reflectivity influences the whole Earth's climate, and the ice is a key habitat for underwater as well as above-water ecosystems.

Antarctic sea ice extent has fallen dramatically in recent years – the effects include accelerated ocean warming, faster loss of inland ice sheets and severe impacts on wildlife