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Life in the Deep Sea

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Mark Van Arsdale

on 8 November 2016

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Transcript of Life in the Deep Sea

Exploring the Deep Sea
Adaptations for the Deep
Bathypelagic Zone
Mesopelagic Zone
Abyssopelagic Zone
Epipelagic Zone
In the no-light environment, deep sea creatures have evolved unique survive strategies:
1.1 Eyes
I. Larger Eyes
III. Eyeless
II. Tubular Eyes
1.2 Biolumanesence
1 : Total Darkness
I. Defence
III. Sight Lamp
II. Offence
2 : Food Shortage
No photosynthesis means no primary production, oportunistic feeding, and energy conservation are essential.
2.1 Minimal Movement
I. Big Teeth
II. Scavenger lifestyle
Every 10m deeper in the sea, water pressure will increase
Deep sea fish have evolved to cope.
2.2 Oportunistic Feeding
I. Stretchable Body
3 : Super High Pressure
I. Porous Tissue
II. No hard tissue
by Huang Yi-Chiao
Light Penetrates
Wind mixing brings Oxygen
Life is active and abundant
Potosynthesis is possible
The twilight zone
Limited Light, not enough for photosynthesis
Limited mixing leads to oxygen minimum zone
Life is highly diverse and highly migratory
The midnight zone
Uniformly dark and cold
Most species have small eyes
No hard surfaces, nothing to sense
Life is gelatenous or soft and squishy
The best survival adaptation is a slow metabolism
In most parts of the ocean this is the bottom
Life is sparce except for on the ocean bottom
Low nutrient availablity
II. Sit and Wait Feeding
III. Geleatenous Bodies
4. Lack of Red Light
Red light is the penetrates ocean water less than other visable light, organisms that are red are invisable in the deep ocean.
I. Lots of things are Red
Are you ready to explore?
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