
On October 25, 2005, Chile Post and Estonian Post collaborated to issue a set of two stamps feature sea mammal, Ballena minke and emperor penguin. The issue stamps have marked both national symbols of their countries. The $ 500 stamp depict Ballena Minke and other stamp depict The Emperor Penguin.
Ballena Minke or Balaenoptera acutorostrata
The common minke whale or Ballena Minke (Balaenoptera acutorostrata), is a species of minke whale within the suborder of baleen whales.The common minke whale is the smallest of the rorquals, and one of the smallest baleen whales . In the North Atlantic, the average size at physical maturity is 8 m for males and 8.5 m for females, while maximum lengths are 8.8 m and 9.1 m , respectively.

Common minke whales have a diverse diet, feeding on various species of fish and crustaceans. In the North Atlantic, they prey on sand lance, sand eel, salmon, capelin, mackerel, cod, whiting, sprat, wolffish, dogfish, pollack, haddock, herring, euphausiids, and copepods.
The common minke whale is considered "Least Concern" on the IUCN red list. In addition, the species is covered by the Memorandum of Understanding for the Conservation of Cetaceans and Their Habitats in the Pacific Islands Region (Pacific Cetaceans MOU) and the Agreement on the Conservation of Cetaceans in the Black Sea Mediterranean Sea and Contiguous Atlantic Area (ACCOBAMS) .