1. Ocean Zones Notes

2. Marine Division by Light
Photic Zone (photo- means light) : the sunlit layer of the ocean’s surface that extends to a depth of 600 meters (2000 feet)
Euphotic Zone- upper part of photic zone, lots of light for plant photosynthesis
Disphotic Zone- lower part of photic zone, animals can see but there is insufficient light for photosynthesis
Aphotic Zone (a- means without): the deepest & largest region of the open ocean where there is no light.

3. Marine Division by Location
Pelagic Zone - open water, divided into:
Neritic Zone (near shore over continental shelf) &
Oceanic Zone (deep water beyond the continental
shelf)
Benthic Zone -division of ocean bottom

4. Pelagic Environments Epipelagic- euphotic zone
Mesopelagic- disphotic zone
Bathypelagic- aphotic zone
Abyssopelagic- deep trench

5. Benthic environments Subneritic Suboceanic Littoral Sublittoral
Bathyal
Abyssal
Hadal

6. Littoral Zone- Benthic environment where the coast is covered & uncovered by tidal action.
b) Sublittoral Zone- past the Littoral, to
the edge of the continental shelf.

7. Benthic Zones
Bathyal Zone- bottom that covers the areas on the continental slopes down to great depths
Abyssal Zone- the dark, lower regions, including the deepest sea floor but not the trenches
Hadal Zone- deepest of all the sea floor, trench walls & bottom of trenches

8. Now, watch this short video and write down all of the organisms that live in each zone.

9. Abyssopelagic Benthic Environments Subneritic Bathyl Suboceanic
Abyssal
Hadal