Having evolved in a three dimensional universe, they're temporarilly reduced to just two until the final desintegration.
View the embedded image gallery online at:
http://alaingeoffroy-photo.com/en/galleries/black-and-white/nature/final-landing#sigProId5e41e3c165
http://alaingeoffroy-photo.com/en/galleries/black-and-white/nature/final-landing#sigProId5e41e3c165