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The Nature Conservancy in Delaware

Several horseshoe crabs pile on top of one another in shallow water.
Pileup Native horseshoe crabs along the bay at Slaughter Beach, Delaware. © Deb Felmey

Preserving Nature in Delaware

Since 1990, TNC has worked with government agencies, private corporations, conservation organizations and our members in Delaware to protect the places on which people and wildlife depend.

Stories in Delaware

A green, brown, and white spotted butterfly sits on a cluster of small white flowers.

10 Amazing Rare Species Found in Delaware

Thanks to land protection projects and ongoing conservation efforts, Delaware has witnessed the return of several rare and endangered species.

Six horseshoe crabs sit on top of a pile of green seaweed that has washed up onto a sandy Delaware Bay beach.

Horseshoe Crabs in the Delaware Bay

Learn how the iconic Horseshoe Crab plays an essential role in the health of our coastal ecosystems in Delaware, and beyond.

A black woodpecker with a red head looks into a hole of a tree where two smaller woodpeckers poke their heads out.

Best Birding Locations in Delaware

Delaware offers some of the best places for birding in the country. Learn about sites across both DE and PA to see unique birds.

Purple Coneflowers grow in bunches on a green field.

Women in Conservation

Representation matters for women, conservation and our future. Meet a few of the incredible women who are working in Delaware with TNC.

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More from Delaware

Learn more about our team and TNC's work across Delaware

Our Staff: Experts in Action

Meet some of the people who are working to create lasting solutions in Delaware and around the world.

Contact Us

Contact our team of 50+ staff members dedicated to making a difference in Delaware.

Volunteer With Us

There is more than one way to volunteer for TNC in Delaware. Find upcoming events and ongoing volunteer opportunities.

Latest Newsletter

Download our latest newsletter featured in the Fall 2024 Nature Conservancy magazine.

Keep Learning

Explore our publications and watch highlights from our presentations and webinars.

Research/Special Requests on TNC Preserves

Click here to apply for permission to conduct research or another special activity on a TNC Preserve.

Several Horseshoe crabs pile on top of one another in shallow water.

Conservation Update

2024, A Year of Conservation Results.

2024 was an important year for conservation. Explore some of our conservation wins and projects in Delaware.

Explore Our 2024 Results
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Upcoming Events

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An aerial photo of a a forest with a dirt path in the center.

Places We Protect

Places We Protect

From forests to the coastline, explore our nature preserves across the state of Delaware.

Find a Preserve Near You
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A river flowing surrounded by lush greenery.