From Cape Lookout’s remote beaches to Atlantic Beach and Beaufort, this coastline blends history and adventure.A sand tiger shark swimming in North Carolina. Cat Gennaro/Getty ImagesTucked along the southern coast of North Carolina is an 85-mile stretch of barrier islands known as the Southern Outer Banks. Nicknamed the “Crystal Coast” for its exceptionally clear water and sparkling white sand beaches, the quiet coastline draws vacationers looki…