oceanography vocabulary

2. Organisms that live on, in, or near the seabed.
5. Shelf: The extended perimeter of each continent, which lies submerged under relatively shallow seas.
7. Slope: The steep slope where the continental shelf drops to the deep ocean floor.
13. Zone: The uppermost layer of the ocean, where sunlight penetrates.
14. Small and microscopic organisms drifting or floating in the sea.
16. Plain: A flat, almost level area of the deep-ocean basin.
17. A series of ocean waves with extremely long wavelengths caused by large-scale disturbances.
18. A deep, narrow depression in the ocean floor, often caused by tectonic
20. Ridge: An underwater mountain range formed by plate tectonics.

1. Zone: The layer of the ocean at depths between 4,000 and 6,000 meters.
3. The rising of cold, nutrient-rich water from deep in the ocean to the
4. An underwater mountain rising from the ocean floor that does not reach the surface.
6. Zone: The deep ocean layer, where no sunlight reaches.
8. Aquatic animals that can swim and move independently of water currents.
9. Vent: An opening in the sea floor out of which heated mineral-rich water flows.
10. Zone: The deepest layer of the ocean, found in ocean trenches.
11. Zone: The middle layer of the ocean, receiving very little light. Bathypelagic Zone: The deep ocean layer, where no sunlight reaches. Abyssopelagic Zone: The layer of the ocean at depths between 4,000 and 6,000
12. The concentration of salts in water.
15. A layer in a body of water where the temperature changes rapidly with
19. Reef: A diverse underwater ecosystem held together by calcium carbonate structures secreted by corals.