I couldn't but help think of lochs and monsters - seen at Loch Lomond
from Wikipaedia:
"A lake monster or loch monster is a purported form of fresh-water-dwelling megafauna appearing in mythology, rumor, or local folklore, but whose existence lacks scientific support. A well-known example is the Loch Ness Monster."
Thank you, Kim. You can see exactly how clear the water is here:
http://365project.org/quietpurplehaze/add-ins/2013-10-15
Chris, thanks for the fav and for the clue!!
Sandy, it's a piece of driftwood.
Well who know - personally I don't believe there is a Loch Ness monster!