The Ocean

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Across
  1. 2. Submerged volcanoes and hills
  2. 5. Scientist who studies marine environments and life
  3. 6. Relatively flat, deep sea floor
  4. 7. Water that is drinkable
  5. 10. A ring of low coral islands and reefs surrounding a central lagoon
  6. 12. Deep notch in the ocean floor created by plate subduction
  7. 13. A steep drop that leads to the bottom of the ocean
  8. 16. Bottom-dwelling animals and plants
  9. 17. The zero height that cartographers, mariners, and aircraft pilots use to measure elevation
  10. 21. Strings of volcanic islands
  11. 22. Smooth transition from the steep slope to the ocean floor
  12. 23. Important marine geologic features that form from the activities of animals
Down
  1. 1. A strip of land that separates the coastal region from the ocean
  2. 3. Ensures a constant supply of nitrogen
  3. 4. Continuously affected by tides, density, salinity, and weather
  4. 7. Animals and plants that do not live on the bottom of the oceans
  5. 8. The ocean's saltiness
  6. 9. Land that slopes out gently away from the continent
  7. 11. A vast process operating at the surface of the earth
  8. 14. Deep holes carved into the Continental Slope
  9. 15. A large section of ocean mostly surrounded by land or islands
  10. 18. Submerged mountain range
  11. 19. Vast bodies of salt water that separate the continents
  12. 20. An ever-changing place that extends underwater beyond the shore