Adam Francis D'Esposito Two weeks after being reported missing , the body of a popular big wave surfer was found in Mexico.Adam Francis D’Esposito, also known as Biff, was discovered by Mexican officials near Rosarito, just over the U.S. border near San Diego, earlier this month but family members only learned of his death Wednesday, according to Fox 5 San Diego .The local outlet also reported a coroner determined the 39-year-old’s cause of death was drowning. How exactly the accomplished water sportsman drowned remains unclear.D’Esposito&rsquo . . .