ライセンス	クリエイティブ・コモンズ「表示 (CC BY)」
原典	https://en.wikipedia.org/wiki/File:Mercator_projection_SW.jpg he world on Mercator projection between 82°S and 82°N. 15° graticule. Imagery is a derivative of NASA’s Blue Marble summer month composite with oceans lightened to enhance legibility and contrast. Image created with the Geocart map projection software.
作者	Strebe