Toy boats float upside down underneath a layer of levitated liquid

The upward force of buoyancy keeps objects afloat even in unusual conditions

toy boats floating right side up and upside down

Creating an antigravity effect in the lab allows objects like toy boats to float upside down on the bottom of a layer of levitating liquid.

B. Apffel et al/Nature 2020

Going bottom-up is no problem for a boat on the underside of a levitated liquid.