From BBC News.

Commercial and fishing vessels are required under international law to be fitted with systems that transmit data, showing where they are.

But many vessels simply do not broadcast their location. Effectively, going dark.

For more than a decade the non-profit organisation Global Fishing Watch has been using technology to shine a light on issues such as illegal fishing, sanction breaking, and potential human rights abuses at sea.

For BBC Tech Now, Grace Ekpu finds out how AI and satellite data are being used in these operations.

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