1.  Hackney Marshes?

2.  As the ice melted, the salt water was mixed with more plain water.

3.  Bitter salt water got past the mouthpiece, choking her, eyes streaming with the effort of coughing.

4.  But salt water has a lower freezing temperature than plain water.

5.  For instance ice which is formed on salt water is substantially fresh, to the great convenience of Polar explorers.

6.  Gargling with salt water may help your sore throat.

7.  He washed his hands in a pool of salt water.

8.  Her timbers needed to swell with the salt water.

9.  If a fresh supply of sea water is needed, one of the commercial salt water mixes can be used.

10.  Large diving sea ducks, often breeding on fresh water but normally resorting to salt water at other times.