A group of scientists has drawn a map that leaves the land blank and highlights what humans have done to the world's oceans. The team was led by Ben Halpern of the National Center for Ecological Analysis and Synthesis in Santa Barbara, Calif. Halpern says the goal is to focus more attention on a part of the world that seems out of sight and out of mind.

The team that drew the new map of the oceans is now working on more detailed regional maps that might be used to predict emerging threats to places like the waters off the coast of California.