one of several versions of the same scene, here the banks are speckled and water reflects green blobs, sky is uniform blue.
he had a cubist period, too!
no doubt inspired by Marcel Duchamps. en.wikipedia.org/wiki/Nude_Descending_a_Staircase,_No._2
And a pointillist, but mostly he is know as a Fauve, ie wild animal, using color like a wild animal...