National Geographics Polar Explorations
The Icy Heart of Polar Seas
S1 • E5 Mar 6, 2015 30m
Virtually every living thing in polar waters, from single-celled phytoplankton to whales, has evolved in a world dominated by sea ice. Study how Arctic and Antarctic marine ecosystems work, and consider what happens to a sea ice-dependent marine ecosystem when the sea ice begins to disappear.
