March 10, 2012 12:00 am Gray Whales Navigate Busy Bay Waters The U.S. Coast Guard is warning boaters to keep their distance from the gray whales frolicking in San Francisco Bay. US & World Videos 2:18 Workers' Memorial Day: Bay Area community honors those who lost lives on the job 0:52 San Francisco celebrates 4 years of the JFK Promenade serving as a car-free space 0:43 Pleasanton community gathers to remember family of 4 killed in crash 0:52 5 hurt in San Jose crash involving Santa Clara County Sheriff's Office car 3:10 The never-ending election?