Datasets of coupled exoplanet interior-atmosphere evolutions for the manuscript "Water oceans on high-density stagnant-lid planets". planet_evolutions directory contains the main data from the study, validations_1Me contains supplementary validation studies evaluating the model sensitivity with respect to changing model parameters. These runs focus on planets with one Earth mass. Each file in the raw_data directories contains a full interior and atmosphere evolution of a single planet. The initial parameters are given in the header of each CSV file. The evolution_snapshots.csv files contain snapshots of those planets at random times.