Good evening all; the moment noneof you have been waiting for has arrived... 
I'm about to reveal the answer to this weekend's teaser! 
La Spice got very close when she suggested droplets of water on seaweed.
Dennypoos got very close when he suggested the surface of a pond with bits of pond-weed sticking through.
There were several extremely interesting guesses, including a robot's sperm count! 
None were completely accurate...
This is actually the edge of a reservoir... there are blades of grass poking through the surface of the water.
So okay, I think this week's teaser should be shared and as the two closest guesses were Dennypoos and La Spice, I am opening the Virtual Prize Draw to them both. Choose wisely my friends.
la_spice
... but hard indeed 
Mmm - I'll have to think!