Science :

 Broken raw egg underwater

In 2011, Divers cracked a raw egg 60 feet below the surface of ocean and they found that the egg doesn't break and also doesn't turn into mess but there appear to be a protective shell around the egg and it started floating like a jellyfish.

This happens because sixty feet below the surface of ocean there's so much pressure on the egg (about 2.8 times of atmospheric pressure) it holds it altogether like an invisible eggshell. 

Source : https://www.sciencealert.com/13-science-facts-never-learned-high-school-2017