How do marine organisms use light?. Light penetration in the photic zone oceanexplorer.noaa.gov What do you notice? What do you wonder?

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Presentation transcript:

How do marine organisms use light?

Light penetration in the photic zone oceanexplorer.noaa.gov What do you notice? What do you wonder?

oceanexplorer.noaa.gov Open waterCoastal water Light penetration in the photic zone

oceanexplorer.noaa.gov Red light penetrates water the least Blue and green light penetrate water the most

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

Why is water blue? Or, why is a red fish red? Why is green algae green? Why is a purple urchin purple?

Why is water blue? What are the wavelengths of light? sun

Why is water blue? Which wavelengths of light can we see? sun X infrared X ultraviolet

Why is water blue? Which wavelengths of light can we see? sun

Why is water blue? sun Blue water absorbs all light waves except blue

Why is a red fish red?

Why is green algae green?

Why is a purple urchin purple?

Not all light penetrates water Blue Planet 0:00 - 5:55 Light Zones Daylight 0-200m Twilight m Midnight 1000m +

oceanexplorer.noaa.gov Remember why a red fish looks red?

oceanexplorer.noaa.gov Remember why a red fish looks red? What does a red fish look like here?

Deep sea dive! Time to put on your masks!

Adaptations to light in water What do you notice? oceanexplorer.noaa.gov

Adaptations to light in water itresourcing.com.au Countershading

oceanexplorer.noaa.gov Adaptations to light in water Bioluminescence

oceanexplorer.noaa.gov Communication Blue Planet 14:30-15:57 & 17:55-18:15

Bioluminescence oceanexplorer.noaa.gov Communication Locating food Blue Planet 16:00-17:16

Bioluminescence oceanexplorer.noaa.gov Communication Locating food Attracting prey Blue Planet 12: :31

Bioluminescence oceanexplorer.noaa.gov Communication Locating food Attracting prey Camouflage Blue Planet 5:55 - 7:35

Bioluminescence Communication Locating food Attracting prey Camouflage Mimicry flmnh.ufl.edu fishbase.org Cookie cutter shark

Bioluminescence Communication Locating food Attracting prey Camouflage Mimicry flmnh.ufl.edu

Bioluminescence oceanexplorer.noaa.gov Communication Locating food Attracting prey Camouflage Mimicry Self-defense Blue Planet 17:18-17:54

Deep Sea Videos 8/10/the-27-best--16.html *extra time The Blue Planet: The Deep, 8:00+