The ‘Pluto Moment’ for Marine Protected Areas

How much of the ocean is really protected?

When the International Astronomical Union changed its definition of what constitutes a planet in our solar system in 2006, demoting hapless Pluto to a dwarf planet, the decision sparked fierce scientific debate and an outcry from the public. But after all was said and done, we earthlings now have a better understanding of our celestial neighborhood, with eight perfectly nice authentic planets, and a greater appreciation of what it takes to be in that exclusive club.

Now, the ocean science community may be facing its own “Pluto Moment.”

The International Union for Conservation of Nature (IUCN)—keeper of the Red List, the most comprehensive source on the conservation status of life on Earth—also sets the global standard for marine protected areas (MPAs). The IUCN has numerous subcategories of MPAs, from fully protected areas to those that allow some fishing or other activity, but in the group’s eyes all MPAs must be created with the primary goal of conserving biodiversity.

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