New South Greenland
Different explanations for Morell's error have been suggested. One of them is that Morrell wanted to deceive with this claimed finding. Morrell describes his sighting briefly, and seeks no personal credit or glory from the discovery. In his narrative, he gives all credit to his fellow sealing captain, Robert Johnson, for finding and naming the land two years earlier. Morrell may have been honestly mistaken, through miscalculation of his ship's position or by misremembering detail when writing the account after nine years. Alternatively, he may have made the common error of confusing distant icebergs with land, or been misled by the distorting effects of Antarctic mirage.  In 1843 the distinguished British naval explorer James Clark Ross reported possible land in a position close to Morrell's; this land, too, would eventually be proven not to exist.