One of my favorite motivational posters. If I ever had my own business I'd have this right on the door next to a gold plaque reading "Kill all the lawyers."
http://www.deaddog.com/uploaded_images/Religion-794993.jpg
Just FYI, but that's a dolphin, not a shark. It has a horizontal tailfin instead of the vertical tailfin of sharks, and there's no second dorsal fin. Plus, dolphins love to play inside the waves like that.
The fins aren't a completely reliable indicator, as Dr. Evil sometimes surgically alters his sharks so they can sneak up closer before unleashing their laser beams.