Across
- 3. U-shaped lake formed when river is cut off
- 5. Large brown algae
- 6. Large natural or artificial water supply
- 11. Marine drifters
- 13. Saturated lands
- 16. Partly enclosed mixed fresh and salt water
- 17. Large community of life in a habitat
- 18. Deep zone without light
- 19. Swimming organisms
- 22. Where the ocean meets the land
- 24. Wetland dominated by grass, not trees
- 25. Largest body of water on Earth
- 26. Small body of still water
- 27. Simple, nonflowering aquatic plant
- 28. Sunlight zone near ocean surface to light
- 29. Ridge of coral at the water's surface sand
Down
- 1. flat area of land next to water
- 2. Ratio of salt to water
- 4. Organisms living at bottom of water body
- 7. Large natural stream
- 8. Deep, cold water rising to surface
- 9. Barrier to hold water back
- 10. Hard stony substance marine life
- 12. Lowest ecological zone in a water body
- 14. Forested wetland
- 15. Of or relating to hot water
- 17. Soft, spongy wetland
- 20. Not salt water, but _____
- 21. Grassy, marshy, reedy zone on water banks
- 23. Open water zone where no light penetrates