Both these physical and political maps are in the public domain which means users can freely download and use them however they want to.
map projection
Maps and GIS
The Spilhaus Endless Ocean Map Projection
However, in 1942, a South African meteorologist, oceanographer, and inventor Athelstan Spilhaus created the world’s first fully ocean-centered map projection.
Maps and GIS
Is this the Most Accurate Worldwide Map Projection?
This new map, called the AuthaGraph, may be the most accurate map projection created to date.