The infrastructures offered in AQUARIUS are categorised in the following nine categories:

• Research Vessels
• Marine Mobile Observation Platforms
• Fixed Marine Facilities
• Experimental Research Facilities
• River & Basin Supersites
• Aircraft
• Drones
• Satellite Services
• Data Centers & Virtual Labs

While the first AQUARIUS Transnational Access Call, offered access to all infrastructures listed in the  AQUARIUS Infrastructure Catalogue, those that were over-subscribed during the first Call will not be available for the Second Call. The availability of infrastructures for the second Call will be indicated on the RI catalogue.