Oceanography Crossword

5. concentration of salts in water
6. layer of the ocean at depths between 4,000 and 6,000 meters
7. deepest layer of the ocean, found in oceans trenches
10. middle layer of the ocean, receiving very little light
11. serious of ocean waves with extremely long wavelengths caused by large scale disturbances
13. deep ocean layer, where no sunlight reaches
16. underwater mountain range formed by plate tectonics
17. aquatic animals that can swim and move independently of water currents
19. layer in a body of water where the temperature changes rapidly with depth

1. small and microscopic organisms drifting or floating in the sea
2. uppermost later of the ocean, where the sunlight penetrates
3. steep slope where the continental shelf drops to the deep ocean floor
4. deep, narrow depression in the ocean floor, caused by tectonic activity
8. extended perimeter of each continent, which lies submerged under relatively shallow areas
9. organisms that live on, in, or near the seabed
12. flat, almost level area of the deep ocean basin
14. the rising of cold, nutrient-rich water from the deep in the ocean to the surface
15. diverse underwater ecosystem held together by calcium carbonate
18. underwater mountain rising from the ocean floor that doesn't reach the surface