The bank of the stream was a fathom from the water which was brackish at high tide and sweet at low.

The brackish nature of the water probably enables it to exist here.

The favorite feeding ground is a salt marsh. with springs and creeks of brackish water.

The water of these springs is brackish. and contains the nitrate of soda.

There was plenty of water in the creek. but the dry season had made it brackish.