The Northwest Atlantic Region includes the offshore waters between Maine and Long-Island Sound. This region is known for its cold, nutrient-rich, and highly productive waters that have sustained regional economies for centuries. With its strong tidal flows, complex circulation patterns, and varied seafloor topography the region supports large diverse populations of bottom dwelling fish and an array of benthic communities. 


Marine Assessments

​The Northwest Atlantic Marine Ecoregional Assessment (NAM ERA) synthesized comprehensive data on species distributions, geology, oceanography, chemistry, biology and social science.  This assessment spans the area from Cape Hatteras in North Carolina to the northern limit of the Gulf of Maine in Canadian waters. MORE INFORMATION

The Long-Island Sound Ecological Assessment (LISEA) is the first of its kind for the submerged areas of Long Island Sound. It enhances the spatial understanding of the Sound’s submerged habitats and in so doing contributes to the body of knowledge needed to help reduce potential future conflicts between and among human uses. MORE INFORMATION


Other Research

If you are interested in this region, you may also want to check out the following TNC projects:


For other datasets from this region, we recommend exploring the NORTHEAST DATA PORTAL.