Idea of No Diving Icon
It is an image of a man standing at the edge of a ledge next to water. He is bent over with his hands out in front of him towards the water. The image has a slash through the man seeming to mean no diving into the water.
This page contains the No Diving vector icon, as well as variations of this icon in different visual styles, and related icons. All icons are in the flat vector style, however, differ by the line thickness, fill, and corner radius.