This is a butterfly’s egg. One egg or one secret space for the butterfly to grow. When its time to go up and out the bufferfly will spread its wings and fly.
The shapes on the outside makes one wonder how this could be made. The answer is resonance of when its being made. It has a resonance that is constant to make it on the egg.
If one took sand and a board and a speaker and was able to change the frequency you could see what different siunds make.