Palaeolithic Flint Arrow-Head?

Whatever it is, you decide.

What might this be?
Answers on a postcard please to:
Hut 11,
Bletchley Park,
Bletchley,

[EDIT]
Actually, it is a semi-submerged branch together with its reflection in the still waters of Kinghorn Loch. There is no trickery or special processing involved.  I simply held the camera at an angle (around 30 degrees) when making the capture.
Milton Keynes
MK3 6EB