After several months of painstaking labor, Szucs finished sorting the world’s rivers according to their ocean drainage basins, and he has new maps to show for it. In his latest creations ...

There were big challenges: Sonar, commonly used to gather data from large swaths of the ocean, can’t provide ... are helping his team map sea features to the centimeter in places such as Guam.

"There's an element of wake-up call when you get maps like this," he said. "Human threats are all pervasive across the world's oceans. "The map is an impetus for action, I think that it is a real ...

It has sometimes been said that we know less about our ocean ... around the world, focused on oil platforms and wind turbines. Global Fishing Watch Beyond fishing, the maps also indicate that ...