 Ziv Television Productions trademarks included odd for the times twists on the genres of his shows, twists such as a crime-fighting underwater explorer (Lloyd Bridges as "Sea Hunt's" protagonist Mike Nelson) and "Highway Patrol", starred Broderick Crawford as Dan Mathews, maybe the first crime drama to show that large urban regions were not the only places where criminals liked to roam.The company's closing logo, the name Ziv in large, Romanesque lettering, inside the frame of a television tube, was one of the most familiar sign-off logos of its time.Ziv's fortunes shifted almost overnight in the mid-1950s.