Once more my congratulations and a go to Anon in Minnesota, Adrian, Jan, Keith and Wilma who correctly identified the developing frog spawn in last week's mystery photo.
The photo was taken late in the day and the spawn appeared brown under the low angle of sunlight. With all the warm weather here in the past week many of them are now freely swimming tadpoles.
I wonder what you will make of this week's puzzle photo
If you need a clue: It won't be slithering across the rockery.
No prizes - just for fun.