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 city’s doing a great job with the cleanup.” Redondo Beach workers use a huge vacuum hose to collect dead fish from the rocks and water in King Harbor. 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. 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.