Dolphin Club

A renegade boater who dropped anchor in San Francisco’s Aquatic Park last year is now gone. But not without a fight that frustrated many locals.

The Golden Gate National Park Service has closed San Francisco’s Aquatic Park to swimming until Monday after two attacks by sea lions in as many days.

A man swimming at San Francisco’s Aquatic Park Thursday was bitten by a sea lion, officials said.

The decaying 85-year old concrete pier in San Francisco has deteriorated to a point that National Park officials worry about allowing crowds onto it, even though it’s open for walkers and bicyclists the rest of the time.

Swimmers set to dive into the San Francisco Bay for an Escape From Alcatraz triathlon are on alert after new video shows a white shark attacking a seal in the area.