Fluid Dynamics Picture Gallery  
   Collection of experimental flow visualizations with brief explanations and references.
   http://www-math.mit.edu/~bush/gallery.html

Gallery of Fluid Motion  
   Special section from Physics of Fluids featuring award-winning photographs and videos from the Annual Picture Gallery of Fluid Motion exhibit.
   http://ojps.aip.org/phf/gallery

The Colorful Fluid Mixing Gallery  
   Mainly CFD based animations and images. The main focus is mixing in industrial equipment, as used in the chemical and process industries.
   http://www.bakker.org/cfm/

eFluids Gallery of Flow Images  
   Unsorted collection of artistic and scientific fluid flow images with explanations, contributed by e-fluids users.
   http://www.efluids.com/efluids/pages/gallery.htm

Gallery of Fluid Dynamics  
   Comprehensive collection of images visualizing flow phenomena including detailed explanations.
   http://www.galleryoffluidmechanics.com/