In short, 72–76% of the world’s industrial fishing, and 21–30% of transport and energy, vessel activity are missing from public tracking systems.
The actual article from Nature, in open access: <a href="https://www.nature.com/articles/s41586-023-06825-8" rel="nofollow">https://www.nature.com/articles/s41586-023-06825-8</a>
This is good research but the hinting that turning off AIS is from ill intent with fishing is not universally true. I have lived and worked on Alaskan fishing boats on and off for a while now. Most people turn off AIS or don't run it at all so they don't reveal their fishing spots to other vessels.<p>This is going to be an ongoing hurdle for most fisheries if more complete tracking is the goal.
"Advances in AI and satellite imagery allowed researchers to create the clearest picture yet of human activity at sea"<p>Can someone find something better so we can do a class action lawsuit for deceit?