In this episode of the SpearFactor Podcast, I talk with Dr. Ray Hilborn, a fisheries scientist at the University of Washington, about the state of fisheries worldwide and the real-world data behind marine conservation.

Ray has spent decades studying fish populations, fishing fleets, and management systems across the globe. He walks me through what his research shows about which fisheries are healthy, which are in trouble, and what separates the two. Many of the assumptions people hold about overfishing don't match the data, and Ray explains where the gap comes from.

We also get into marine protected areas. MPAs are often presented as the default tool for ocean conservation, but Ray argues the picture is more complicated. We talk about where MPAs help, where they fall short, what they cost in terms of food production and displaced fishing effort, and why catch limits, gear rules, and stock assessments often do more for fish populations than closing off areas of the ocean.

Ray explains that the best way to manage fisheries is not through MPAs, but through active fisheries management and enforcement — science-based catch limits, gear restrictions, stock assessments, and monitoring. He points to his own research showing that where fisheries are managed and enforced, stocks are at target levels or rebuilding, and where management is weak, stocks decline.

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