1. Bathometry

2. Divisions of the Ocean Basins
Arctic Ocean

4. Features of the Ocean Floor

5. Features of the Deep Ocean Floor

6. Hydrothermal Vents

7. Classification of the Ocean Floor by Continental Margins
Passive / Atlantic Type
Active / Pacific Type

8. Bentic (bottom) Zones Intertidal: (shallowest)
Lies between low tide and high tide lines
Extreme environment: exposed to sun and water, breaking waves.
Many plants and animals live here.

9. Bentic (bottom) Zones Sublittoral: (below the tide)
Largest number of benthic organisms live here.
Submerged continental shelves

10. Bentic (bottom) Zones Bathyal Continental slope to 4000 m.
Little or no light, plants scarce

11. Bentic (bottom) Zones Abyssal Hadal No light 6000m and below
Used to describe trenches
Uniquely warm and full of life

12. Pelagic (water column) Zones
Neritic zone:
(1) Located above cont. shelves
(2) Abundant sunlight, moderate temps., low pressure
(3) Ideal for marine life, source of most fish and seafood

13. Pelagic (water column) Zones
Oceanic zone:
(1) Extends into the deep and open ocean waters beyond cont. shelf
(2) Marine life decreases with depth in the pelagic environment (water).

14. Mapping the Ocean Floor
Bathometry
Echosounding
RADAR
SONAR
Satelites