water+gravity.

http://lpphoto.be/files/gimgs/16_druppels20090604mg7306-edit.jpg
I.
http://lpphoto.be/files/gimgs/16_druppels20090604mg7314-edit.jpg
II.
http://lpphoto.be/files/gimgs/16_druppels20090603mg7001-edit.jpg
III.
http://lpphoto.be/files/gimgs/16_druppels20090601mg6950.jpg
IV.
http://lpphoto.be/files/gimgs/16_druppels20090531mg6787.jpg
V.