How do marine organisms use light?
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Transcript of How do marine organisms use light?
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How do marine organisms use light?
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Light penetration in the photic zone
oceanexplorer.noaa.gov
What do you notice?What do you wonder?
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oceanexplorer.noaa.gov
Open water Coastal water
Light penetration in the photic zone
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oceanexplorer.noaa.gov
Red light penetrates water the least
Blue and green light penetrate water the most
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How do marine organisms use light?
• Sunlight is needed for photosynthesis (primary production to support food webs)
• Light for animals to see– Finding food– Avoiding predators– Finding mates
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Why is water blue?Or, why is a red fish red?
Why is green algae green?Why is a purple urchin purple?
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Why is water blue?What are the wavelengths of light?
sun
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Why is water blue?Which wavelengths of light can we see?
sun
X infraredXultraviolet
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Why is water blue?Which wavelengths of light can we see?
sun
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Why is water blue?
sun
Blue water absorbs all light waves except blue
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Why is a red fish red?
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Why is a red fish red?
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Why is green algae green?
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Why is a purple urchin purple?
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Not all light penetrates water
Blue Planet0:00 - 5:55
Light Zones
Daylight0-200m
Twilight200-1000m
Midnight1000m +
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oceanexplorer.noaa.gov
Remember why a red fish looks red?
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oceanexplorer.noaa.gov
Remember why a red fish looks red?
What does a red fish look like here?
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Deep sea dive!Time to put on your masks!
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Adaptations to light in water
What do you
notice?
oceanexplorer.noaa.gov
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Adaptations to light in water
itresourcing.com.au
Countershading
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oceanexplorer.noaa.gov
Adaptations to light in water
Bioluminescence
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Bioluminescence
oceanexplorer.noaa.gov
Communication
Blue Planet14:30-15:57 & 17:55-18:15
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Bioluminescence
oceanexplorer.noaa.gov
Communication
Locating food
Blue Planet16:00-17:16
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Bioluminescence
oceanexplorer.noaa.gov
Communication
Locating food
Attracting prey
Blue Planet12:17 - 14:31
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Bioluminescence
oceanexplorer.noaa.gov
Communication
Locating food
Attracting prey
Camouflage
Blue Planet5:55 - 7:35
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BioluminescenceCommunication
Locating food
Attracting prey
Camouflage
Mimicry
flmnh.ufl.edu
fishbase.org
Cookie cutter shark
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BioluminescenceCommunication
Locating food
Attracting prey
Camouflage
Mimicry
flmnh.ufl.edu
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Bioluminescence
oceanexplorer.noaa.gov
Communication
Locating food
Attracting prey
Camouflage
Mimicry
Self-defense
Blue Planet17:18-17:54
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Deep Sea Videos
http://blogs.discovery.com/deep_sea_news/2008/10/the-27-best--16.html
*extra time The Blue Planet: The Deep, 8:00+