On the inland side of Barnegat Lighthouse some thirty Long-tailed Ducks were foraging for food. They are the same size as the nearby Harlequin Ducks. They swam back and forth, diving frequently for what seemed like a long time. They are reputed to be capable of reaching depths up to 200 ft (60 m). They live near the Artic and winter on the East Coast. Only the males have the distinctive long black tail that curves upward.