Across
- 2. a colder, deeper layer that is not mixed
- 4. the path of water through our environment
- 7. low, narrow, sandy islands that form parallel to a coastline
- 9. areas of saturated ground
- 10. deepest zone in the ocean
- 13. depressions in a rocky shoreline that are flooded at high tide but retain some water at low tide
- 14. the colder water below the thermocline boundary
- 17. special variety of trees that grow in salt water
- 19. are known as littoral zones
- 21. community occurring on the bottom of the ocean
- 23. the bottom
- 24. bays where rivers empty into the sea
- 25. free floating photosynthetic plants
Down
- 1. mainly fed by groundwater
- 3. discovered thousands of different types of organisms
- 5. the sharp temperature boundary
- 6. found below ocean crust, that heats the vents
- 8. wooded wetlands with trees
- 11. 1977 explorations with deep-sea submarine
- 12. shallow body of water that flows in one direction and rich in nutrients
- 15. shallow wetlands flooded regularly with seawater
- 16. deep layers of accumulated, undecayed vegetation
- 18. shallow ecosystems where land surface is saturated at least part of the year
- 20. has photosynthetic organisms
- 22. layer of open water zone with highest level of light and oxygen