It was a beautifully illustrated picture book with a Japanese feel to the pictures, lots of soft grey/black/brown brushstrokes etc, can't remember the story but it had a page where a cat looked into the sea and there was a herring or fish underwater and a reflection of the moon ( I think). it may have been an American book as it belonged to an American friend of my mother who used to read it to me when we visited her.
Not much to go on, but maybe someone will remember it?