Paper Parks? Why Marine Protected Areas Are Failing Sharks
How To Protect The Ocean · Andrew Lewin - Marine Biologist & Science Communicator
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Show Notes
Marine Protected Areas are expanding worldwide, but new research shows that protection on paper does not always translate to protection in reality. Satellite tracking of silky sharks reveals that highly mobile predators regularly cross MPA boundaries into heavily fished waters, exposing serious enforcement gaps. When fishing fleets concentrate along invisible ocean borders, even large reserves struggle to deliver real conservation outcomes.
Shark conservation and ocean governance are at the center of this story. Studies published in peer-reviewed journals and vessel tracking data from Global Fishing Watch show that industrial fishing pressure can persist inside or along the edges of protected zones. Weak enforcement, multi-use designations, and migratory behavior create loopholes that undermine top predator recovery.
Ocean policy and enforcement gaps raise a bigger question: if marine protection exists only on a map, does it count? This episode examines silky sharks as a case study, then expands to global MPA effectiveness, industrial fishing pressure, and what true protection should look like in the open ocean.
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