Holy fucking shit.
What you’re seeing here are cell-like regions of the sun’s plasma that result from the turbulent motions of hot plasma rising to the surface of the sun, cooling, and sinking again. This process of convection affects the sun’s magnetic fields, which can lead to solar storms if the fields get tangled enough.
For perspective, note that each of those “cells” is about the size of Texas.
Isn’t this beautiful, though, seriously? I love it so much.