RESOMAR (Réseau des Stations et Observatoires Marins) is a network of marine stations and observatories along the coasts of France. All benthic data collected in the coastal and littoral ecosystems at these stations are stored in the RESOMAR Benthos Database. The purpose of these data is to use them scientifically to address issues of marine conservation at the national level. The data were collected by researchers located at the marine stations and observatories along the French coasts. The Benthos Database contains about 300.000 species occurrences. The database also contains historical records. Currently (January 2013), the Inventaire National du Patrimoine Naturel (INPN) shows only part of the database, i.e. only the data on decapod crustaceans (species, location, site, date and observer name).