Marine researchers tagged 4, 063 fish (big ones, mostly) off the coast of California and followed their movements for ten years.

The study….reveals the eastern Pacific Ocean is akin to Africa’s Serengeti, teeming with wildlife and crisscrossed by migration corridors used by sharks and seabirds. But the census’s greater value might be in advancing knowledge of a largely uncharted underwater world on which we increasingly depend.

Very cool—it’s work like this that may help to save our oceans.