From the Transactions of the Zoological Society of London, late 1800s
From NOAA archive: http://www.photolib.noaa.gov/historic/nmfs/figb0258.htm
Cleaned and desaturated in Photoshop

Source: https://commons.wikimedia.org/wiki/File:PilotWhale.jpg

The short-finned pilot whale (Globicephala macrorhynchus) is one of the two species of cetaceans in the genus Globicephala. It is part of the oceanic dolphin family (Delphinidae), though its behaviour is closer to that of the larger whales.