Spokesman Lorenzo Veloz of the Florida Fish and Wildlife Conservation Commission said in a news conference Sunday that Fernandez, 24, was one of three men killed in the accident.
The Coast Guard arrived on the scene at around 3 a.m. to find a 32-foot boat upside down on a jetty off Miami Beach. Two of the victims were found dead under the vessel. One was found dead in the water. None of the deceased was wearing a life vest.
Fernandez died from trauma and not drowning, Veloz said.
The names of the other two individuals were withheld pending notification of relatives, the Coast Guard said.
Speed is suspected to be a factor in the accident because of the impact with the jetty, Veloz said. There was no evidence of alcohol or illegal drug use.