Sure would be nice to have a simple cylindrical version of David Sandwell’s Satellite Geodesy “global” topography map, over at the Scripps Institute of Oceanography.
Say 7200×3600 pixels? Or, even better, 10,800×5400 pixels. David? David, are you out there, can you hear me?
Below I had to cobble in the poles from another source, so both the color match and data match are off.
Map in progress, with currents from multiple sources, Creative Commons copyright Chuck Clark 2014: