I photograhed my wife for a picture by the lighthouse. When developted we noticed "something" that was not there before.

We arrived home from this vacation in Cancun.  We did not develop the picture for a week or two.  When we did develop it, we noticed a white "something" in the background of a picture close to the lighthouse in Garrafon, Isla Mujeres.  On closer magnification it looks like a "spaceship" about 10 feet long and 200 feet up in the air.  It looks almost like the small scout ships in the movie "Independence Day".  I will send the pictures tonight 4-11-00. I work in the propulsion division as an aerospace engineer for the Department of Air Force.  Note:  It looks like the "something" is preparing to enter the water, as there is a circle forming on the water below it.
We received the photograph, and an enlargement of the object.  We are unsure of what the object is, but our first guess would be some kind of large sea bird, probably a pelican.  However, that is only an educated guess.