It might have been categorized as a bird photo as well. Not one person (so far) has asked about the bird and I imagine few people know that it's a cormorant and that the bird (which dives below the surface for fish) is trained to return the fish to the man. It's a symbiotic relationship that is seldom (if ever) seen anywhere else in the world. I am somewhat surprised that you did not give an explanation, as it's an interesting story and one not well known in the west. It is a great photo and I personally like the way you've chosen to process it. It looks like a drawing. (Which I consider a compliment.)
I would really like to make a work of mine with a representation of this wonderful photography ! Maybe with pencils or with inks ^^ What do you think about that ? I think it would be nice Anyway congratulation, really amazing piece mate !