The generosity of our supporters has been the driving force behind our progress and success in protecting Nantucket Sound. Click below to review our 2025 end-of-year newsletter to see the progress we have made this past year.
Nantucket Sound Won’t Stay a National Treasure Without Your Support
The Alliance to Protect Nantucket Sound is a non-profit environmental organization dedicated to the permanent preservation of Nantucket Sound by designating it as a National Historic Landmark.
A National Treasure
Nantucket Sound is the body of water between Cape Cod and the islands of Martha’s Vineyard and Nantucket. The Sound includes 750 square miles of federal and state waters that possess significant marine habitat for a diversity of ecologically and economically important species.

With Your Help,
We’re Making Great Strides.
Petition Signatures
Stakeholder Organizations
Supporters
What’s New
Thursday, March 19 Webinar
Endangered Beauty: Wildflowers and Wildlife of Our Coastal Grasslands
6-7pm ET
Join Dr. Sarah Bois, Director of Research and Conservation at the Linda Loring Nature Foundation, for a deep dive into the botanical and biological wonders of the coastal grassland ecosystems of Nantucket. These maritime sandplain grasslands are a globally imperiled habitat host to numerous rare and endangered flora and fauna. Sarah will guide us through why these grasslands and heathlands are so special, how the maritime climate, including wind and salt spray shape these habitats, and what we are doing to protect them into the future.
Thursday, April 30 Webinar
A History and A Future for Land Conservation
on Cape Cod
6-7pm ET
Long-time conservation leader Mark H. Robinson will present a lively overview of the past, present, and future of land conservation on Cape Cod. From early philanthropic preservation efforts to the rise of land trusts and municipal programs in the 1980s, Mark will trace the milestones that have shaped the region’s open space landscape. Looking ahead, he will explore 21st-century trends in eco-restoration and climate resilience, with a special focus on beachfront and bayshore preservation along Nantucket Sound. Robinson’s extensive experience offers us a rare inside look at the forces protecting the Cape’s natural character.
2025 End-of-Year Newsletter
MVY Radio’s segment on the Alliance to Protect Nantucket Sound
MVYRADIO Reporter Joe Stickles interviews Audra Parker from the Alliance to Protect Nantucket Sound

