Across
- 3. The deepest layer of the ocean, found in ocean trenches.
- 10. under relatively shallow seas.
- 12. A flat, almost level area of the deep-ocean basin.
- 13. A layer in a body of water where the temperature changes rapidly with
- 14. The concentration of salts in water.
- 15. A deep, narrow depression in the ocean floor, often caused by tectonic
- 18. The extended perimeter of each continent, which lies
- 20. The deep ocean layer, where no sunlight reaches.
- 23. Aquatic animals that can swim and move independently of water currents.
- 24. The uppermost layer of the ocean, where sunlight penetrates.
Down
- 1. An underwater mountain rising from the ocean floor that does not reach
- 2. The middle layer of the ocean, receiving very little light.
- 4. disturbances.
- 5. An opening in the sea floor out of which heated mineral-rich
- 6. The rising of cold, nutrient-rich water from deep in the ocean to the
- 7. An underwater mountain range formed by plate tectonics.
- 8. The steep slope where the continental shelf drops to the deep
- 9. The layer of the ocean at depths between 4,000 and 6,000
- 11. secreted by corals.
- 15. surface.
- 16. Small and microscopic organisms drifting or floating in the sea.
- 17. floor.
- 19. A series of ocean waves with extremely long wavelengths caused by
- 21. A diverse underwater ecosystem held together by calcium carbonate
- 22. Organisms that live on, in, or near the seabed.