We usually look at evolution as something that happens, rather than as something which is continually happening. And that’s normal, we cannot really observe the evolution process happening, it takes A LOT of years to show significant changes.
HOWEVER, not all species evolve at the same pace. If we change the place we look for evolution we can actually see it happening right in front of our eyes. For example, bacteria is evolving much faster than any other life form.
Scientists at Harvard Medical School have created a perception altering experiment that shows creation of mutants and evolution of species in real time (at least time period we can grasp and record on camera). Watch evolution happening right on front of your eyes: