These migratory creatures, and others like them, pose a unique headache for conservationists: how to align protection policies across the globe. Now scientists in Australia have unveiled a first-of-its-kind global migration map , which could prove a vital asset. Leatherback turtles swimming tens of thousands of kilometres from Indonesia to Oregon, and Arctic terns traversing the planet from pole to pole. They reviewed more than 1,000 studies on the movements of migratory species to create a freely accessible tool known as MiCO, or Migratory Connectivity in the Ocean. The UQ team found, for example, that 91% of migratory birds are inadequately protected across their life cycles.