Haunted Seas (often abbreviated as HS) are outposts inhabited by ghostly ships, led by the Brigand King Barnabas the Pale. Clues as to the existence of Haunted Seas were first seen on July 29, 2010, when three inscriptions were discovered on various islands across all production oceans except Crimson. These riddles were quickly solved, and the Haunted Seas were officially announced on July 31. They were released to production oceans on August 24, 2010.