The victims were taken to a hospital, but couldn't be revived, KION-TV, Monterey, reported Saturday. The names of the husband and wife had not been released.
The drownings occurred Friday afternoon at Whalers Cove at Point Lobos State Park. Capt. Carlos Aguilera of Cal Fire told the TV station it's a popular area for scuba diving with frequent accidents every year.
"There's lot of scuba divers that do launch from here," Aguilera said.
"Even though this is a very beautiful place to be at, we want to be cautious. The tides, along with the weather patterns, can change and affect the tide pattern."