The Estuarium is a wet lab, public exhibit and learning space that offers hands-on programs in the urban ecology of New York Harbor and the larger Hudson River ecosystem. It operated as a community organization at Pier 26, Manhattan, in TriBeCa, from 1986 to 2005. The old Estuarium was torn down as construction of the TriBeCa portion of Hudson River Park proceeds.
The River Project's marine biology field station and Wetlab is currently located at Pier 40, north of Pier 26. The Wetlab on the south side of Pier 40 features a 3,500-gallon aquarium system of free-flowing brackish water from the Hudson River that varies in salinity with the changing hours and seasons. Numerous freshwater and marine vertebrates and invertebrates are represented there. Here we offer a variety of field trip experiences for schools and summer camps, host local scientists, and perform research of our own.