Most map projections emphasize the continents since the oceans are considered unimportant. No really, I've actually seen a cartographer put that in print. That's an extremely narrow viewpoint. The oceans cover 7/10ths of the planet and are critical for life, weather and chemical cycling. Additionally, most of the major plate boundaries (mid-ocean rifts and subduction zones) and their associated tectonic movement occurs within the oceans. Subduction may be the most important process operating on Earth as it drives plate tectonics, transports water and chemicals into the mantle that lower melting temperatures and weaken the mantle permitting tectonics.
The Spilhaus projection was first used by Athelstan Spilhaus in an article in 1942, is known for its unique property of displaying the oceans as a nearly continuous body of water. One can repeat parts of the map to extend the small bits of oceans at the boundary without interruptions (e.g., the Gulf of Mexico and Arctic Ocean). The projection above is not technically a Spilhaus projection (according to the ESRI article above) because I haven't incorporated a slight skew to the projection above to match Spilhaus's printed map. I'll posit he made a slight mistake that is effective irrelevant. Unless one puts the gridlines and coastlines on top of each other, you wouldn't notice the difference visually. This projection involves rotating the Earth to place 115ºE, 30ºN and 65ºW and 30ºS at the pole positions before performing an Adam's projection with a -24º central meridian.
There's a monster on this map. Don't know if you noticed. It is asleep above. I've zoomed in on it below.
