The bottom of the ocean is shown in 3D for Earth, while the land is smooth. The black photo is from a similar globe in 2005, but that is the Seafloor Globe 150x. The new Seafloor Globe 40x has 9 times less detail per unit area as well as a smoother shape for easier manufacturing. It may need collaboration to cut it in half and to add scaffolding. Data Sources: ETOPO2 includes: Smith & Sandwell The "Smith & Sandwell" database is a worldwide set of 2-minute gridded ocean bathymetry derived from 1978 satellite radar altimetry of the sea surface GLOBE The "Global Land One-kilometer Base Elevation" (GLOBE) database is made up of data sets from more than eight US and foreign agencies. It covers all of the world's land masses at a resolution of 0.5 minute (30") of latitude and longitude, which is approximately one kilometer at the equator. IBCAO The International Bathymetric Chart of the Arctic Ocean (IBCAO) initiative developed a digital database that contains all available bathymetric data north of 64 degrees North. The version contained in ETOPO2v2 is 1.0, sampled to 2' cell averages.  NGDC Coastal Relief Model (CRM) The Coastal Relief Model (CRM) is used for US waters from the coastline to as far offshore as the NOS hydrographic data will support a continuous view of the seafloor. Data were sampled to 2' cell averages for areas adjacent to all 48 conterminous states, Hawaii, and NGDC Great Lakes Bathymetric Data Great Lakes bathymetric data were sampled to 2' cell averages for all five Great Lakes. 3" source grids were available for lakes Huron, Michigan, Erie, and Ontario; preliminary 30" grid data were sampled for Lake Superior. All lake depth data were made consistent with surrounding land elevations and each lake's mean level datum.  I wrote a computer program using the Perl language. It uses this stuff: $goal2= int($goal/(256256)); $goal3 = $goal - ($goal2(256256)); print $goal, " is ", $goal2, " times 256256 plus ", $goal3, " "; binmode(OUT_STL); $endian = pack("S2",$goal3,$goal2); print OUT_STL $endian; for ($auto=2; $auto<3; $auto++) { if ($auto==0) { $person="gea45045 ";