What doers the crew find as they attempt to hunt the spirit spout> is moby dick the whale making the spout? if so is this incident repeated?

Several weeks pass under easy sail, and the Pequod reaches several different grounds. It was while in the area south of St. Helena that a silvery jet is seen far in advance of the white bubbles at the bow. Fedallah first sees it, and Ahab commands that the sails be set to find the whale. Some days later, after this brief sighting has nearly been forgotten, the whale is again found. These are "temporary apprehensions, so vague but so awful." It probably is Moby Dick toying with Ahab.