The unidentified surfer was in the water at Salmon Creek, north of San Francisco in Sonoma County, when the attack happened.
Shark attacks are rare, but hotspots see more activity due to warm waters, surf conditions, and heavy tourism.
Joan Branson, wife of British billionaire Richard Branson, dies at 80 Sea lion surprises swimmers near Victoria, B.C. Those convicted of fatal dangerous driving could receive lifetime bans in Ontario ...