Who is the artist that makes 3D outdoor paintings?

Question

My professor showed us these neat photographs of these paintings outside that looked stunning realistic. I think one involved a manhole, and there might've been a dolphin/shark/alligator in one, although I can't be positive. They were so convincing and realistic, absolutely amazing.

Answer 1

If you mean the guy who creates sidewalk art using chalk that looks 3-d, then this is the guy.

http://users.skynet.be/J.Beever/pave.htm

His name is Julian Beever

Answer 2

You might be thinking of Kurt Wenner.