A 15-year-old boy miraculously survived the unthinkable: a harrowing two days atop an overturned fishing boat in Alaska’s frigid Bering Sea, enduring darkness, bad weather, and 50-degree water before rescuers finally found him. Derek Parker Aghnaanga left the remote village of Savoonga on St. Lawrence Island on September 4th with his 35-year-old brother, Sidney Kulowiyi, and a cousin for a halibut fishing trip aboard an 18-foot skiff. The boat was expected home early Sunday. It never arrived. And tragically, the 15-year-old boy’s family members would die before rescue. According to Aghnaanga’s family, conditions deteriorated Saturday night. Sidney was attempting to get his younger brother a life jacket when he became tangled in lines as the skiff flipped. Aghnaanga and his cousin managed to climb onto the overturned hull, but Sidney was lost. The cousin remained with Aghnaanga through the night before eventually slipping away and drowning. Aghnaanga was alone.…