At 9:17 a.m., the captain of an Alameda-Oakland Ferry vessel called the Peralta reported a possible man overboard west of Alameda Point, Lt. j.g. Jeremy Pichette said.
The Coast Guard launched two vessels and a helicopter to search the area.
At 9:56 a.m., the helicopter crew spotted someone in the water south of Yerba Buena Island and west of Alameda Point in Oakland, Pichette said.
A small boat was directed to the area, where the crew recovered a woman from the water and began administering CPR.
The woman was taken to Pier 39, where she was pronounced dead.
