Penguins

This is a glass armchair with two not miscible liquids of two different densities inside; the top liquid is colourless and the bottom one coloured blue. On the surface of the blue liquid, two small penguins are floating. Their mass has been matched so that they do not drown.

The shape and size of the penguins depend on from which side of the armchair we look at them; the penguins aren't deformed only in the vertical direction.

The liquid at the bottom has a smaller index of refraction, hence we observe the phenomenon of total internal refraction, as is the case of underwater photographs.