It is often said that humanity has explored outer space more extensively than the depths of the oceans—but a team funded by NASA is working to change that ...

Open the Youtube video In the past, scientists relied on sonar-equipped ships to map underwater terrain, but this method was slow and expensive. With just 25% of the ocean floor mapped this way ...

To get an idea of how detailed the map is ... The digital bathymetric model and a high-resolution map of the Southern Ocean are available for download free of charge at the project website ...