This Service acts as the taxonomic backbone of the infrastructure: a taxonomic identity code (ID) is assigned to all the taxa registered in the TIS. All the information (e.g. systematic classification, taxonomic description, functional trait information, geographical distribution, registered material in the systematic collections of the Museums, etc.), which is relevant to a taxon can be assigned to its ID and through this to any other kind of information linked to that. The TIS Service is directly based on those developed in Flanders Marine Institute (VLIZ), which have been developed in the course of several EU and international projects and initiatives, such as MarBEF (Marine Biodiversity and Ecosystem Functioning), PESI (Pan-European Species directories Infrastructure) and WoRMS (World Register of Marine Species).