The Clean Water Act's long-term impact in numbers: New York Harbor is now clean enough to sustain a whale population. Nine humpbacks were photographed in a single day against the Manhattan skyline. Gotham Whale's catalog documents nearly 500 humpback whales off New York as of 2025

AI justification

Clean Water Act enforcement restored marine ecosystem enabling whale population recovery | The Clean Water Act's enforcement has directly restored a critical marine ecosystem, demonstrating measurable success in biodiversity recovery and environmental protection. This aligns with SDG 14 (Life Below Water) and SDG 15 (Life on Land) by reversing decades of pollution damage and enabling the return of keystone species like humpback whales to urban waters.