...get rid of them. (i have nothing against trash cans, it's just that ones eyes travel to them and this takes away from the main focus of the shot, which BTW is lovely)
Why? And what is the main focus?
And while we are at at, let's get rid of the other distracting elements: two birds and the woman, and get just another "milky water and shoreline" shot. Nothing wrong with those shots, and this would be a nice one, but this is a different shot. Instead of being an abstract of colors and shapes, it adds several other layers of interpretation. There is a triangular composition: woman, birds, cans. There is metaphorical triangle as well: humans, animals, human artifacts. There is a beauty (the sea) and the beast (garbage).
Why would one want to get rid of all of it, the uniqueness, for the sake of just another abstract, done and seen millions of times already?