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Long Island Sound Seafloor Habitat Mapping Initiative

A federal, state and academic partnership applying advanced technologies, and predictive models to collect data, characterize the ecological and physical environment, and develop map products to guide decisions for better management of the Sound

Large boulder in Long Island Sound covered with the northern star coral Astrangia poculata

About

Learn about the background, methods, regions and research teams

About
The Data Navigator map of Long Island Sound with a compass rose

Data Navigator

Access hundreds of data sets and products from Long Island Sound

Data Navigator
The Research Vessel Lowell P Weicker

Topics & Methods

Explore the range of data topics and methods used to collect a wide range of data

Topics & Methods
Integrated habitat map for the Phase II area

Products

Links to publications, reports, posters and map products

Products
Cover of the Long Island Sound Seafloor Story Map

Story Maps

Interactive Story Maps that present elements of the mapping initiative

Story Maps
Screen capture of the introduction to a summary video of the Kraken2 remotely operated vehicle dive on Sample Block 56 in eastern Long Island Sound

Multimedia

Interactive maps that present videos and images of the seafloor of the Sound

Multimedia

Latest LIS Mapping News

  • Lamont Team Completes Sediment Sampling

    In March 2026 a team from Lamont-Doherty Earth Observatory of Columbia University and CUNY Queens College New York collected a series of short sediment cores in the Central Long Island Sound (Phase Areas 3 and 4) using the Stony Brook…

  • LIS Data Navigator Now Available

    The Long Island Sound Data Navigator allows users to access hundreds of data sets and products from an easy searchable interface. Multiple pull down menus allow searches to be made and links to available data are provided. This tool was…

  • Interactive Dive Map with Video Links

    An interactive ArcGIS Online map featuring the locations of some of the remotely operated vehicle (ROV) dives in the Phase IIIB area in the Fall, 2024. Clicking on the points on the map brings up metadata for each dive, including…

  • Remotely Operated Vehicle Expedition

    A remotely operated vehicle (ROV) expedition was conducted during the first week in June (2-6) to the west-central area of the Sound to re-visit high priority sites that were first visited in the fall, 2024. The Boxfish Alpha ROV was…

  • Decision Support Tool Workshop Report

    The Final Report of the workshop held at UConn Avery Point on April 4, 2024 is now available, and provides a summary of the recorded feedback provided by spatial data users from throughout the Long Island Sound Region on the…