Bubble bean bags in shampoo
  In these fluid dynamics videos, we, for the first time, show various interactions of a 'Taylor bubble' with their smaller and differently, shaped counterparts, in a shear thinning, non-Newtonian fluid, confined in a narrow channel. 
Anup Kundu, Chandan Sharma, Gargi Das, G. Harikrishnan
physics.flu-dyn