A relational database containing information on practically all fishes known to science. Search by common or scientific name, family, ecosystem, country/island, or topic. Also includes a glossary and reference search tool.
The National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD) are used to portray surface water on The National Map. The NHD represents the drainage network with features such as rivers, streams, canals, lakes, ponds, coastline, dams, and streamgages.
The Ocean Biogeographic Information System (OBIS) allows users to search marine species datasets from all of the world's oceans. Users can identify biodiversity hotspots and large-scale ecological patterns, analyze dispersions of species over time and space, and plot species' locations with temperature, salinity, and depth.
These pages provide access to water-resources data collected from across the United States. It includes data on the occurrence, quantity, quality, distribution, and movement of surface and underground waters.