Diving trick

I wish I thought to try this (they’re at about 100 feet below the surface):

According to geek.com:

The science behind the result is not too difficult to understand. Because of the weight of seawater, objects at considerable depth have much more pressure placed on them. The greater the depth, the higher the pressure. At 100 feet of water, the pressure felt is equal to about three times the our normal pressure on land (about 45 PSI). With all of that force pushing in on the egg, it can maintain the ovoid shape. The reason that the egg looks yellow is the fact that raw egg whites are nearly transparent, so it’s hard to make them out on video.