This one seems appropriate for the "nature" thread.

Circle B Bar Reserve, Lakeland, FL

Small-6247 by kayaker72, on Flickr

I can see why the Anhinga is nicknamed the "Snake Bird" I was actually shooting a GBH, when I saw movement out of the corner of my eye. My first impression was that this long curved black body was a snake. Of course, as soon as I could look at it I saw the above scene, with the Anhinga's body under the water.