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. 

Save the Date: Friday, May 10th, 2019


Roux Environmental Consulting & Management is hosting their 8th Annual Fundraiser in support of a local and charitable organization. This year, they chose us! 

We'd love to use this opportunity to get to know you more and have you enjoy yourself alongside like-minded individuals. This is an open invite, so spread the word! 

Click here to download the event flyer and purchase tickets via the button below. 

Ticket prices include passed appetizers, buffet, and open bar.

We look forward to seeing you there! 

Purchase Tickets

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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.

Pay with PayPal or a debit/credit card

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