The Underwater Vision Profiler 6 (Picheral et al. 2022) is an instrument developed to in situ count and size particles larger than 80 µm equivalent spherical diameter (ESD) and to obtain images for further identification of particles larger than 1000 µm ESD. The high frequency version (UVP6HF) can be deployed at speeds of 1 m/s. The low power, low frequency version can be deployed on more slowly moving vectors such as gliders and floats or as a moored instrument. The UVP6 consists of a grey level camera and a processor unit mounted in one pressure container and a red laser diode flash which generates a fan of light in another pressure container. Both containers are connected via a solid arm and a cable and the camera images the fan of light from “above”. The UVP6 images a volume of 0.7 L of water and can be deployed down to 6000 m water depth. The high acquisition frequency allows us to obtain a continuous profile of the particle size distribution in the water, which can e.g. be used to estimate the amount of carbon present or settling at different depth (e.g. Kiko et al. 2017). The digital nature of the UVP data allows for easy data compilation (e.g. Kiko et al. 2022, global particle size distribution dataset obtained with the UVP5) and enables insights into local to global particle dynamics (Clements et al. 2022) and zooplankton distribution (Biard et al. 2016, Christiansen et al. 2018, Drago et al. 2022).