As reported on www.sfgate.com
The waters off Stinson Beach are closed until sunset Friday because of a shark sighting over the weekend, officials said Monday.
A surfer who previously worked as a National Park Service lifeguard spotted a shark, 8 to 10 feet long, about 125 yards offshore at 7 p.m. Sunday, said park spokesman Rich Weideman.
The shark, possibly a great white, was north of the beach’s main lifeguard tower.
Signs have been posted warning visitors to stay out of the water until Friday.
The last shark sighting at the beach was this spring, Weideman said.
Such sightings prompt an immediate three-day restriction, as sharks typically feed for several days in a given area, he said. The park service decided to add on two extra days this time as a buffer.