SISMER has a strong presence on the national and international marine data management scene. Cooperation takes the form of both "exchanges with institutions" and "technical cooperation".

We note in particular cooperation with national oceanographical data centres under the coordination of IODE, the International Oceanographic Data and Information Exchange programme of the UNESCO Intergovernmental Oceanographic Commission (IOC).

Cooperation may be of a technical or functional nature and may be through European projects such as SeaDataNet/SeaDataCloud or CMEMS – Copernicus Marine Environment Monitoring Service.

In France, SISMER is a key player in the Odatis cluster (Ocean Data and Services). Odatis is intended as the national single point of entry to access ocean observation data.