Water

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Across
  1. 2. zones in the vertical water column of a water body
  2. 3. waste or debris of any kind
  3. 4. the bottom of sea or lake
  4. 8. a bay or drowned valley where a river empties into a sea
  5. 9. relatively shallow region along a continent’s coast
  6. 10. shallow wetlands along a coastline
  7. 12. water that seeps into the ground
  8. 13. sweat
  9. 14. a body of permeable rock that may contain groundwater
  10. 19. protects islands from storms
  11. 20. zone exposed by low tides
  12. 21. vaporize
  13. 22. the action of breathing
  14. 23. has photosynthetic organisms
Down
  1. 1. the photic zone, reaching about 20 meters below the surface
  2. 2. free-floating photosynthetic plants
  3. 5. prominent oceanic features composed of hard, limy skeletons
  4. 6. water that runs of the land
  5. 7. sharp temperature boundary
  6. 11. water that condenses over land surfaces
  7. 15. trees from a number of genera that live in shallow salt water
  8. 16. whitening of corals caused by expulsion of symbiotic algae
  9. 17. deepest zone (up to 6,000 meters)
  10. 18. currents circulate nutrients from the oceans floor to the surface