I couldn't get past this but, I finally figured it out! In S.S Logwater, where u press a button and the door opens, but as soon as u go off, the door closes. I found a solution! when the fish bones start chasing u, go to the button and level with it then go to the top and wait for the fish. As soon as the fish reachs the spot where u where, hit him and go the door and it should be opened.Well, hope I helped!