How does an atom really look?
For a long time, we pictured the electron orbiting the nucleus like a planet circling the sun.
But that model was rejected once we discovered that the quantum universe behaves in far stranger ways.
You are looking at a Quantum Probability Cloud. According to the Schrödinger Equation, electrons exist as a fuzzy mathematical pattern of probability density.
Every pearl represents a point where an electron is likely to be found when observed. The swirling flow is a stylized representation of the Probability Current: a circulation that orbitals with a non-zero magnetic number carry around their axis.