Walking on a beach in northern Tasmania (Weymouth) at very low tide I came across this pattern in the sand.

What made those squiggles?

I tried to find the critter responsible but no success. Not enough time, unfortunately.

https://picasaweb.google.com/1120217834 … -56Fi5SAIw


it's going to be very difficult to say much with just the tracks. one obvious question is how big they are - there is no scale in the short.