Seamounts are 'undersea mountains' that are hotspots of diversity and areas of conservation importance. We still don't have a comprehensive inventory of seamounts. However, we can estimate the location and number of seamounts by examining global bathymetry (depth of seabed) grids. As maps of the seabed are improved, thanks to expansion of accoustic mapping, it is important that predictions of seamounts are kept up to date. We note that care must be taken when interpretting these data, as the seamount predictions are only as good as the quality of the underlying bathymetry. This study revises a previous estimate of seamounts, increasing the total to 37,889. The GIS dataset of seamount predictions is available here (https://doi.org/10.1594/PANGAEA.921688).