Doug Niblack was trying to catch another wave before going to work when his longboard hit something hard as rock off the Oregon Coast and he suddenly found himself standing on the back of a thrashing great white shark.
Looking down, he could see a dorsal fin in front of his feet as he stood on what he described as 10 feet of back as wide as his surfboard and as black as his own Neoprene wetsuit.
"It was pretty terrifying just seeing the shape emerge out of nothing and just being under me," he told The Associated Press on Wednesday. "And the fin coming out of the water. It was just like the movies."