SAN FRANCISCO (KGO) -- It takes a lot of paddling to reach the fjords of Norway from a small bathtub on San Francisco's Telegraph Hill. But for Bay Area entrepreneur Bryton Shang, all it took was the thought of artificial intelligence and fish to make him dive right in.

"And one of the ideas I was looking into was fish and fish farming. And so I had a friend of mine tell me about that. And started off with a prototype literally in my apartment bathtub," explains Shang.

He says his background includes helping develop A.I. for cancer detection, and his early experiments with the bathtub fish camera convinced him that similar A.I. technology could also help make one of the largest food industries on the planet more sustainable.