Zonation in the ocean powerpoint

1. Zonation in the Ocean

2. The ocean can be divided into zones.

3. neritic zone
•shallow water over the continental
shelf
•lots of light
oceanic zone
•water over the deep sea
•light only at the surface

5. ocean light zones
photic zone
•sunlit, upper layers of ocean
•made up of euphotic and disphotic zones

6. ocean light zones
euphotic zone
•sunlit, upper layers of ocean
•upper 150 m – depending on where you are
•phytoplankton can survive and
photosynthesize here

7. ocean light zones
disphotic zone
•twilight zone
•enough light to see, but not enough for
photosynthesis
•extends to a few hundred meters deep

8. ocean light zones
aphotic zone
•permanently dark
•no sunlight
•no photosynthesis
•most of ocean
•extends to sea floor

9. vertical zonation of the ocean depends on depth

10. The Epipelagic Zone

11. The Mesopelagic Zone

12. The Bathypelagic Zone

13. The Abyssopelagic Zone

14. The Hadal or Hadopelagic Zone