Real-time visualization becomes ever more important in the ocean sciences, as many authorities call for a digital twin of the ocean. Like astrophysics, it is a realm that cannot be personally explored and experienced, requiring artificial presence or telepresence. Particularly synoptic, multidisciplinary projects require visualization. This is why we operate the ARENA2 visualization dome theatre at GEOMAR hosting a variety of hard- and softwareplatforms, of which we give a very brief overview. Our focus of this talk is on clustered, web-gl based interactive real time data visualization. Triggered by this application, we call for more standardization in warping and blending procedures, leveraging browser-based capacities for everyone. Lastly, we point out that visualization alone is not enough in science. Scientists need a full recording of the visualization workflow and its results, i.e. control of the workflow provenance. Also, we require interactive queries of the data to create added scientific value. (10 minutes)