Ocean Geography

4. The measurement of the depth of water in oceans.
6. The evolutionary process by which organisms change to survive in their environment.
7. Underwater ecosystems formed by the dense growth of several different plant species.
8. In this zone there is no light, food is scarce, the temperature cold, and the pressure intense.
9. One of the seven seas.
11. An underwater volcano.
13. The zone at which sunlight penetrates the ocean water and where food is plentiful.
14. The largest ocean on earth.

1. A fissure on the seafloor from which geothermally heated water discharges.
2. Colonies of coral polyps are held together by calcium carbonate.
3. The deepest point in the ocean.
5. The measurement of distance north or south of the Equator.
8. A group of salt tolerant trees and shrubs that live in the coastal intertidal zone.
10. A flat region of the ocean floor.
12. The name of the seamount off the southeast coast of Hawaii.