first compared internally for each year, but only the flukes (n = 139) were used forthe purpose of comparison against the Antarctic Humpback Whale Catalogue(AHWC, n = 2,857; Allen et al. 2011) and the Magellan Strait, Chile (EMa,n = 126) catalogue from the Southern Hemisphere. All matches (flukes and dorsalfins) were verified by a second person at the College of the Atlantic, Bar Harbor,Maine, where the Antarctic catalogue is maintained.