Robert Johnson, 62, died Thursday night and Margret Johnson, 57, passed
away around 6 p.m. Saturday, both at UCSD Medical Center.
Margret Johnson was behind the wheel of their Dodge Caravan last Monday around 11 p.m. when she drove through a "T" intersection at Harbor Island Drive and plunged into the water, according to San Diego Harbor Police.
The van was submerged for an extended period of time before the Johnsons were rescued. Both were unconscious when they were pulled out of the vehicle.