Workers at King Harbor inject air into the water to break up the layer of dead fish on the bottom. Hand crews use nets to scoop up the fish.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Joe Bark, a scuba diver with the Redondo Beach Harbor Patrol, surfaces in King Harbor. He said he measured a layer of dead fish that was 2 feet thick on the harbor bottom. Officials expect the decaying fish to rise to the surface in a few days, creating a powerful odor.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach workers use a huge vacuum hose to collect dead fish from the rocks and water in King Harbor.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  King Harbor employees work in unison to scoop dead fish from the bottom of King Harbor.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  A King Harbor Marina patrol boat uses its twin outboards to churn up the water to dislodge the layer of dead fish on the bottom. Hand crews then use little nets to collect the floating carcasses.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — People look at some of the dead fish, estimated to be in the millions, floating in King Harbor Marina in Redondo Beach.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — Michael Patton, a lobster fisherman who lives in King Harbor Marina in Redondo Beach, carries a bucket of dead fish that he intends to use for lobster bait.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — Live sardines swim slowly past a dead fish in the King Harbor Marina in Redondo Beach. Millions of sardines, anchovies and mackerel were found floating lifeless in the marina at dawn.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — A couple troll their little boat through a mass of dead fish in the King Harbor Marina.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — Dead fish are dumped in a bin in the King Harbor Marina in Redondo Beach.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — Harbor Patrol workers begin harvesting some of the millions of dead fish floating in the King Harbor Marina in Redondo Beach.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — It's easy fishing for sea gulls and pelicans in the main channel to King Harbor Marina in Redondo Beach. Many live sardines and anchovies were still swimming in the water but millions were floating dead in the boat slips.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — Dead fish float around the hull of a yacht in the King Harbor Marina in Redondo Beach.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — A dead sardine falls into a mat of dead fish as workers attempt to collect as many of the 8-inch-long fish before decay begins at the King Harbor Marina in Redondo Beach.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times  Redondo Beach — Dead sardines amid a mass die-off in the King Harbor Marina in Redondo Beach.  PHOTOGRAPH BY: Don Bartletti / Los Angeles Times
Redondo Beach officials said initial assessments suggest oxygen depletion in the King Harbor basins caused the massive fish die-off. "Every indication is that this is a naturally occurring event," a state Fish and Game official said. "It’s just a mess. It's going to smell for a while, but the...