I'm going to test another banana in the pool today. I was wondering if the first one floated because of the potassium so I googled it and, guess what? I think I'm on to something.
I feel like Newton sitting under an apple tree discovering gravity - except with bananas and floating in a pool.
Why does potassium float In water?
Potassium floats in water because it is lighter than water.
When we say this, it means that the density of potassium is less than that of water.
https://www.quora.com/Why-does-potassium-float-In-water