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. 

You Helped Us Raise Over $16,500!


Friday, May 10th was the first fundraiser event held for Coastal Steward Long Island, and thanks to the incredibly generous support of Roux Environmental Consulting & Management for hosting it - all of the proceeds go directly to us to help us keep our mission going!


Without each and every one of you there, this amazing goal would not have been accomplished. We recognize how important the coastlines of Long Island are and we want them to be healthy and productive for generations to come. This certainly won't be the last fundraiser we have, so we want to hear from you the highs and the lows! 

Please connect with us and tell us what you loved and didn't love so much. And stay informed on the impact your donations will have! 

We hope to see as many of you and more at future events. Check our News & Events section on our website for beach cleanups, shellfish projects, and other events.

Thank you from all of us!

Connect with us

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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