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How does life adapt to such a complex, three dimensional environment with such extreme limiting factors (including light, access to food, the proximity to the bottom, or interacting with coastlines)?
The ocean, while stable and uniform in many ways, has distinct features that create subdivision, and one often sees patterns of evolution to adapt to these different habitats. Intertidal organisms receive daylight and night, dry and wet, hot and cold conditions. Those at depths deal with cold, dark, lonely space. Some live along the bottom, or even in the bottom. Some glow in the dark. This lesson examines the various regions found within the water column.
Instruction, Presentations, Assignments, Activities, etc:
Diagram - Life Zones (in plan )book on long sheet (notes)
Crossword puzzle - review of first two major lessons.
Videos: bioluminscence TED-Ed
Assignment - The Sunless Sea - passage from Rachel Carson's The Sea Around Us
Closure: Reading "Ocean-floor Migration" from the Economist 4/30/2011 (see Warm up)
Web Resources:
Videos: bioluminscence TED-Ed
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