This was one of very many things that Kotick learned, and he was always learning. Matkah taught him how to follow the cod and the halibut along the undersea banks, and wrench the rockling out of his hole among the weeds; how to skirt the wrecks lying a hundred fathoms below water, and dart like a rifle-bullet in at one porthole and out at another as the fishes ran; how to dance on the top of the waves when the lightning was racing all over the sky, and wave his flipper politely to the Stumpy-tailed Albatross and the Man-of-war Hawk as they went down the wind; how to jump three or four feet clear of the water, like a dolphin, flippers close to the side and tail curved; to leave the flying-fish alone because they are all bony; to take the shoulder-piece out of a cod at full speed ten fathoms deep; and never to stop and look at a boat or a ship, but particularly a row boat. At the end of six months, what Kotick did not know about deep-sea fishing was not worth the knowing, and all that time he never set flipper on dry ground.