Blue planet. Episode 4, Frozen seas /
Life on the edge of a frozen sea is tough. Pack-ice at both poles is constantly on the move, and in winter it freezes solid. Only in spring, does life begin again. Witness the plankton bloom and how this feeds vast hordes of migrating fish, birds, whales, seals and polar bears. Walruses also rake th...
Saved in:
| Online Access: |
Full text (MCPHS users only) |
|---|---|
| Other Authors: | |
| Format: | Electronic Video |
| Language: | English |
| Published: |
London :
BBC Worldwide,
2001
|
| Series: | Academic Video Online
|
| Subjects: |
