a garbage bag?

or an alligator?  LOL - you would think it would be fairly easy to tell the difference- but I am not so sure.  here is a photo of what we saw alongside the neighbor's dock last night at sunset. 

you make the call- I originally thought garbage bag but then got the binoculars and took a closer look- then it looked more gator-like but it never moved- didn't even "blink" and Phil said "gator" - this morning I am voting garbage bag again as it hasn't moved an inch.

but at least it is an interesting shaped garbage bag.

and remember - we are city-folk...LOL