Coastal Steward
Long Island

Marine Education

Teaching through Marine Environmental Stewardship Center field trips and more


Leading Long Island beach
cleanups for over 10 years


Regenerating shellfish populations with the Town of Brookhaven

Our Mission

Coastal Steward Long Island (CSLI) is dedicated to restoring and preserving Long Island’s coastline through education, raising public awareness, and community action. CSLI programs educate our youth and local community groups in coastal environmental awareness through beach cleanups, shellfish population restoration, and citizen science. By engaging with our local youth and communities, we foster a caring connection between Long Island residents and their shoreline, and create future generations of coastal stewards. 

4th Annual Youth Ocean Conservation Summit


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The Youth Ocean Conservation Summit (YOCS) this year will be held at the beautiful Wertheim National Wildlife Refuge in Shirley, NY! This is a great opportunity for high school students to get involved with people in the ocean conservation field. Students attending the summit will be able to listen to speakers focused on ocean conservation topics providing ideas for both science projects and stewardship projects that will aid in efforts to conserve our oceans. They will also get the opportunity to network with researchers, local marine organizations, and hear stories of past attendees and the success of their mini grants.

Registration includes: breakfast, lunch, networking with individuals in the ocean conservation field, and the possibility of your own mini grant! The YOCS will be providing mini grants to students that write a project proposal, and CSLI will offer additional mini grants to support student projects! 

When: Saturday, November 10th 

Where: Wertheim National Wildlife Refuge - 340 Smith Rd, Shirley, NY 11967

Time: 9AM - 3PM

Ashly Carabetta Announced as the New Executive Director

On Tuesday, September 4th, Ashly Carabetta was named the Executive Director for Coastal Steward Long Island (CSLI). Ashly has served on the Board of Directors for CSLI for the last two years. “This is an exciting and new opportunity for Coastal Steward Long Island and myself, and I am incredibly humbled, honored, and thrilled to accept the position.”   

Ashly received her Master’s degree in Marine Biodiversity and Conservation from Scripps Institution of Oceanography in California. After living in a few cities around the U.S., Ashly wanted to move back to New York, not only for family and friends but because, “Long Island is a place that I love and a place I know well, as it is one of the richest places for biodiversity of wildlife in its waters, along its coastline, and on land. I love the “wild side” of New York and I wanted to help people see what I see, and to learn from those who have been experiencing it for longer than I have. Coastal Steward Long Island stood out to me as an organization who genuinely cared about their work, about inspiring young minds, and was working overtime to keep their mission going. This is a fantastic opportunity to give back, apply my education and knowledge as well as share the great gifts of the shoreline with many others.”  

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Support Our Cause

Your support and contribution will enable us to meet our goals and improve our coastal environment. Your generous donation will help educate young Long Islanders, restore local ecology, and keep our beaches clean.

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Contact Us

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Coastal Steward Long Island

544 Jefferson Plaza #48, Port Jefferson Station, NY 11776

(631) 941-6528

Marine Environmental Stewardship Center

Cedar Beach
231 Harbor Beach Road
Mount Sinai, NY 11766