A man who fatally struck a paddleboarding 12-year-old girl with a personal watercraft in Mission Bay last year pleaded guilty Thursday to vehicular manslaughter with gross negligence. Arsanyous Refat Ghaly, 20, admitted to causing the July 29, 2023, crash that killed Savannah Peterson. The victim was on a paddleboard in the De Anza Cove area when she was struck by the watercraft around 2 p.m. She was taken to a hospital, where she died of her injuries. Ghaly, who was 18 years old at the time, was arrested last November in connection with the fatality. He remains out of custody and is set to be sentenced next month. His guilty plea includes an agreement to a sentence of six months in county jail, 50 days in the work furlough program, and two years of probation. Prosecutors allege the crash occurred within an area where watercraft operators are required to stay below 5 mph. At a preliminary hearing held earlier this year, a police officer testified that data pulled from the watercraft indicated it was traveling between 47 to 53 mph at the time of the collision. Ghaly’s defense attorney, Hakim George Hakim, called the crash “a tragic accident” and argued at the hearing that his client was operating the watercraft more than 100 feet from shore, where it was permitted to pilot watercraft at higher speeds. The fatality also led to a wrongful death lawsuit filed on behalf of the girl’s parents. Ghaly is named as a defendant in the civil suit, along with the city and county of San Diego, among others.