Sea Floor Flyover: SF Bay

I started sailing the bay in 2000 when we purchased our 30 foot sloop, Addiction. Since then I have sailed more than twice a week on the bay. About 2000 times I estimate. That is alot. I know the bay like the back of my hand! What I know nothing about is what is underneath me. This video gives me a better idea. The bay has been carved by the rivers that flow into from the Sierra Nevada Mountains to the east. It's fasinating to see what's down there!