K:
Kids Corner of the USGS Biological Resources Discipline - Games, coloring pages, stories, and lots of information about living things. [Department of the Interior, U.S. Geological Survey (USGS)]

N:
National Wetlands Inventory Center (NWI) - Generates information about the characteristics, extent and status of the Nation's wetlands and deepwater habitats [Department of the Interior, U.S. Fish and Wildlife Service]
National Wetlands Research Center - Homepage for the National Wetlands Research Center, Lafayette, Louisiana with links to general information, staff, issues and capabilities, library, publications and data [Department of the Interior, U.S. Geological Survey (USGS)]

T:
Teacher Online Resources, Aquatic Biology. - Educational resources on aquatic biology compiled by the NBII, an NBII Information Node. [Department of the Interior, U.S. Geological Survey (USGS)]