His most famous photograph was taken in 1886; Water Rats caused a little comment at the time as it featured naked children, but the image is not erotic. Sutcliffe was using the conventions of the academic nude to show how photography can approach art.
He was, however, excommunicated by his local clergy for displaying it, as they thought it would 'corrupt' the opposite sex. Edward VII (then the Prince of Wales) later purchased a copy of the picture.