Abstract Photography is an interesting area because it is often quite difficult to understand. One explanation is that if you can recognise the object being photographed then the image is not abstract.
While this may be true it is quite possible to produce abstract images from very recognizable objects simple by getting in very close.
The shot below was taken of a spider web that has collected the morning dew. It was shot with a standard lens in as close as i could and try to time it perfectly so that no breeze was present.