Life and Danger Under the Antarctic Sea
In Life and Danger Under the Antarctic Sea, narrator Sir David Attenborough explores life under the Antarctic Sea where fish have antifreeze in their blood and jellyfish and starfish thrive. But when brine starts seeping down, it catches animals in its wake. This video is excerpted from BBC’s Frozen Planet, a series that shows a fragile world of beauty and hostility, where nature finds a way to survive and thrive in frigid conditions.
Lesson Express
Q: Why is brine a problem for life on the seabed?
A: The brine is very salty. When it freezes, it catches and kills the organisms in its path.
Q: What does it mean to have “stable conditions”? What does this mean for life on the Antarctic seafloor?
A: Stable conditions means that the environment does not change. On the seafloor, this means that there is no change; no new water or currents change the environment.
Q: What did you notice in this video? What surprised you? What did you learn?
A: Student responses will vary.
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