The birds of Norfolk & Lord Howe Islands and the Australasian South Polar quadrant :
London :H.F. & G. Witherby,1928.
biodiversitylibrary.org/page/58795326
Description: English: A photograph of a leopard seal catching a Gentoo penguin. The caption on the photograph reads "A leopard seal captures a Gentoo penguin near Palmer Station, Antarctica.". Date: 4 April 2009. Source: U.S. Antarctic Program Photo Library. Author: Sean Bonnette, National Science Foundation.