After leaving the Sky Pillar I flew back to Pacifidlog Town and I swapped Pokemon there and took out my newly captured Rayquaza. I flew to Slateport City and I went south to the beach there and Surfed. I went inside the Abandoned Ship since I wanted to explore the areas that were underwater. I used Dive inside one of the flooded cabins and I arrived at a new area that contained six rooms. I walked into the rooms and found gleaming bits of trash and some room keys. After picking up a Water Stone and doing some more stuff around the ship I finally gained access to the Scanner item and I left the ship. I headed back to Slateport City and spoke to Captain Stern. I traded the Scanner for a Deep Sea Tooth.