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Your support and contribution will improve our coastal environment by helping educate young Long Islanders, restoring local ecology, and keeping our beaches clean.
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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.
Marine Education
Teaching through MESC field trips and more
Preservation
Leading Long Island beach cleanups for over 15 years
Restoration
​Regenerating shellfish populations with the Town of Brookhaven
Interested in our field trips? ​Click below to see a sneak peek of what it's like to visit the Marine Environmental Stewardship Center (MESC) with Coastal Steward!

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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
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