Can someone give a picture to visualize and elucidate the celebrated rhyme of Richardson about turbulence? Richardson's celebrated rhyme is below:

Big whorls have little whorls,
which feed on their velocity,
and little whorls have lesser whorls,
and so on to viscosity.
(Lewis F. Richardson, 1920)

I read the rhyme and have no picture in my mind, I wonder what picture and concept the Richardson wanted to express. Can you give me a picture about this rhyme?
 A: These rhymes are usually referred to the concept of energy cascade, see https://en.m.wikipedia.org/wiki/Energy_cascade, usually interpreted in the domain of wavelength.
Historically, it was thought that large coherent structures (whatever they are) associated with large wavelengths transfer  energy to structures with smaller wavelengths, and so on in a the energy cascade, down towards the so called Kolmogorov turbulent scale, where viscous dissipation dominates.
This picture of mono-directional energy cascade is not accepted anymore, because it can occur that energy is transferred from smaller to larger scales
A: Richardson was probably familiar with the transition of from laminar flow to turbulence in smoke.

and vortex shedding as you move objects through a fluid.

These days there is a lot of [simulation and comparison to experiment] that can show some fractal like behavior more clearly3.

A: There is a beautiful experiment by McKeow et al. "The Emergence of Small Scales in Vortex Ring Csllisions", video in the link [1]. You can also check their paper "Cascade leading to the emergence of small structures in vortex ring collisions", link [2].
[1] https://www.youtube.com/watch?v=_z099yZzQik
[2] https://journals.aps.org/prfluids/pdf/10.1103/PhysRevFluids.3.124702?casa_token=ovtIj0OK2w4AAAAA%3A2VslBIo0y9uLItNDYDu0wU-MaxRf6SiJUpPIsZMBh_rHIRFcsmSQGAvrYeSG1jhEweiGV1x5udY3p9aa
