Marine biologist Rick Rosenthal witnesses something no one has seen before: an adult sailfish believed to possess poor eyesight feeding at night. Then, drawn by the glow of Rick's flashlight, a baby sailfish emerges from the darkness. NATURE follows Rosenthal's search for elusive species of billfish in ³Superfish," premiering Sunday, May 4 at 8 pm ET on PBS (check local listings). Academy Award-winning actor F. Murray Abraham narrates the film, part of the 26th season of the Peabody and Emmy award-winning series produced by Thirteen/WNET New York for PBS. Major support provided by Canon U.S.A. Inc., Toyota, and the Corporation for Public Broadcasting. For more information, visit http://www.pbs.org/nature