  Active matter, composed of self-propelled entities, forms a wide class of
out-of-equilibrium systems that display striking collective behaviors among
which the so-called active turbulence where spatially and time disordered flow
patterns spontaneously arise in a variety of {active systems}. De facto, the
active turbulence naming suggests a connection with a second seminal class of
out-of-equilibrium systems, fluid turbulence, and yet of very different nature
with energy injected at global system scale rather than at the elementary scale
of single constituents. Indeed the existence of a possible strong-tie between
active and canonical turbulence remains an open question and a field of profuse
research. Using an assembly of self-propelled interfacial particles, we show
experimentally that this active system shares remarkable quantitative
similarities with canonical fluid turbulence, as described by the celebrated
1941 phenomenology of Kolmogorov. Making active matter entering into the
universality class of fluid turbulence not only benefits to its future
development but may also provide new insights for the longstanding description
of turbulent flows, arguably one of the biggest remaining mysteries in
classical physics.
