Across
- 3. The rising of cold, nutrient rich water from deep in the ocean
- 7. The steep slope where the continental shelf drops to the deep ocean floor
- 9. A flat, almost level area of the deep ocean basin
- 12. Aquatic animals that can swim and move independently of water currents
- 16. The deepest layer of the ocean
- 18. The extended perimeter of each continent which lies submerged under relatively shallow seas
- 19. A diverse underwater ecosystem held together by calcium carbonate structures secreted by coral
- 20. The concentration of salts in water
Down
- 1. The layer of the ocean at depths between 4,000 and 6,000 meters
- 2. An underwater mountain range formed by plate tectonics
- 4. A deep, narrow depression in the ocean floor often caused by tectonic activity
- 5. An underwater mountain rising from the ocean floor that doesnt reach surface
- 6. Small and microscopic organisms drifting or floating in the sea
- 8. The deep ocean layer where no sunlight reaches
- 10. Organisms that live on, in, or near the seabed
- 11. The middle layer of the ocean
- 13. An opening in the sea floor out of which heated mineral rich water flows
- 14. The uppermost layer of the ocean where sunlight penetrates
- 15. A layer in a body of water where the temperature changes rapidly with depth
- 17. A series of ocean waves with extremely long wavelengths