From Cheddar.

New York Harbor wasn’t always the polluted waterway we know today. Centuries ago, over 220,000 acres of oyster reefs thrived in these waters, filtering the harbor and supporting a vibrant marine ecosystem. But over-harvesting, dredging, and pollution wiped them out completely. Now, an ambitious initiative called the Billion Oyster Project is bringing them back—one shell at a time.

Here’s what makes this remarkable: each oyster can filter up to 50 gallons of water daily. Multiply that by a billion, and you’re looking at nature’s most powerful water purification system. But it’s not just about clean water. These oyster reefs create habitats for hundreds of marine species, protect NYC’s shorelines from devastating storm surges, and engage the next generation in hands-on environmental restoration. The project partners with over 70 restaurants to recycle discarded shells, which students at the New York Harbor School then use to cultivate baby oysters before returning them to the harbor.

The numbers are staggering: over 100 million oysters restored, 16 acres of reef rebuilt, 11,000 students involved, and nearly 15,000 volunteers mobilized since 2014. With the goal of one billion oysters by 2035, this isn’t just environmental restoration—it’s a blueprint for how cities can heal their waterways while educating future generations. New York is literally rebuilding its natural infrastructure, one oyster at a time, proving that urban centers and thriving ecosystems can coexist.

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