The global footprint of fishing is even bigger than expected. But a novel monitoring tool could help put it on a more sustainable path.

To satisfy our hunger, we humans catch something on the order of one trillion fish ever year — a yield that amounts to more than 90 million tons of animal flesh.

We’re clearly the top predator of the seas. But just how much of the oceans are being fished at an industrial scale, what are the patterns, and how are they changing over time? Answering those q