The entire water cycle comprising oceans, seas, coastal, ground and inland water is under high (human) pressure. For this reason, the restoration and protection of our oceans and waters is one of the five EU missions that must be completed by 2030. There is no need to say that this requires research resulting in a number of heterogenous research data products that include hydrology, biodiversity, and socio-economic data. Making such data findable, accessible, interoperable, and reusable (so-called FAIR Principles) is where the EU-funded research project AquaINFRA comes into play.