Nolan Wells died after going on a boat trip with friends on the 4th of July.
Investigators found no evidence the parents showed any obvious impairment signs.
The family of the 10-year-old boy rescued by a 16-year-old Santa Cruz lifeguard in a dramatic and heart-pounding viral video is describing the intensely emotional surf rescue for the first time. "Another two of three seconds, I don't think my son would have made it," said Sumit Rai, the father of the rescued 10-year-old, Nathaniel.
The tragedy claimed the lives of 58-year-old Tondra Madruga and 79-year-old Clifford Boisa, whose wife and sister remain missing after their boat capsized during an outing with mostly family members to spread a loved one's ashes.
A body found in the water just west of the Golden Gate Bridge over the weekend has been identified as one of the victims in the Volare boating disaster in the San Francisco Bay.
A body was found floating in the water on Saturday just west of the Golden Gate Bridge, San Francisco Police Department said.