Water Ecology Puzzle

3. Where no sunlight gets through the water, making photosynthesis impossible
7. Areas nearest a river's course that are flooded periodically
10. The part of 5-across farther from the shore, where there are no rooted plants
11. Bodies of water, partially enclosed by land, that occur where fresh water from land drainage meets the water of an ocean or inland sea.
12. The amount of salts dissolved in water
13. Areas of land that are flooded with water at least part of the year

1. The part of 5-Across where the water is shallow enough that aquatic plants grow from the mud and reach above the surface of the water
2. The very bottom of a body of water
4. The top layer of an aquatic ecosystem where there is enough sunlight for plants to undergo photo synthesis
5. The vertical flow of cold, nutrient-rich water towards the surface
6. Type of ecosystem covered by water at high tide, but exposed at low tide
8. Type of water with less salt than saltwater, but more salt than freshwater
9. A bend in a river