Coastal Steward
Long Island

Marine Education

Teaching through Marine Environmental Stewardship Center field trips and more

Marine Education

Teaching through Marine Environmental Stewardship Center field trips and more

Preservation

Leading Long Island beach
cleanups for over 10 years

Preservation

Leading Long Island beach
cleanups for over 10 years

Restoration

Regenerating shellfish populations with the Town of Brookhaven

Restoration

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. 

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Thank you to Fabien Cousteau, Jane Bonner, and all who participated in The Great Brookhaven Cleanup!

Click here to read more.

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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

Drop us a line!

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