Every day, tens of thousands of large fishing boats scour the ocean in search of seafood. And some of them end up fishing illegally, sneaking into areas where they’re not supposed to go.

A massive new project, Global Fishing Watch, lets you track all of these boats in near real time. This is the world’s fishing industry in action, hauling in hundreds of thousands of tons of fish each day:

 (Global Fishing Watch)

This map is a collaboration between the conservation group Oceana and the nonprofit SkyTruth, using Google’s mapping software to track the world’s 35,000 largest fishing vessels. You can zoom in, go back in time, and watch fishing activity all over the world. (There’s a lag of 72 hours, but the data goes back to 2012.)

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