Polar Explorations Season 1 Episode 5 The Icy Heart of Polar Seas
- TV-PG
- March 9, 2015
- 28 min
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.