I was down at Point Lonsdale last week - a small coastal town on the western edge of Port Phillip Bay.
There are a series of semi-saline Lakes near the town called Lake Victoria. I went there looking for lingering waders (or which there were a few) - but I also found these patterns in the dried mud of some of the lakes.
I really liked the contrast between the sandy mud and the glasswort / samphire plant.
You can find more macro shots at Macro Monday2 and I Heart Macro. SM