Upper: Blue whale; Lower: Fin whale
Title: Discovery reports
Identifier: discoveryreports01257540inst (find matches)
Year: 1929 (1920s)
Authors: Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee
Subjects: Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands
Source book page: https://archive.org/stream/discoveryreports01257540inst/#page/n294/mode/1up
Author Institute of Oceanographic Sciences (Great Britain);
National Institute of Oceanography of Great Britain;
Great Britain. Colonial Office. Discovery Committee
Source: https://commons.wikimedia.org/wiki/File:Discovery_reports_(1929)_(20779193209).jpg

The blue whale (Balaenoptera musculus) is a marine mammal belonging to the baleen whales (Mysticeti). It is the largest animal known to have ever existed. Blue whales were abundant in nearly all the oceans on Earth but their numbers have been greatly reduced due to whaling.