The question raised in a forum and some responses it triggered:
From others:
Obviously, its bright orange peel is like the sun, always raising. When you remove the peel, it looks like the moon and sets. I think Plato wrote a paper on this.
The skin is full of tiny pockets of air and oils, which make the orange more buoyant. The oils repel water, and the air in the pockets is less dense than water. Without the skin, the orange loses buoyancy because it’s just densely packed fluid-filled cells and the solid matter of the pulp.
Think of the peeling as bubble wrap and the orange as a balloon filled with water
Oranges have tiny arm likeappendages called cilia with which they swim. Removing the skin removes its arms and the orange can no longer tread water.
The pith in the peel holds a lot of air. Reasoning says…
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