 The abstract summarizes the importance of alkaline phosphatase, AP, activity as a proxy for dissolved organic phosphorus, DOP, utilization in marine environments. AP activity is measured in various size fractions of the water column and is globally distributed across different oceanic regions. This dataset provides a valuable reference for future research on DOP utilization and can be used to support field investigations and modeling activities. This article was authored by Beisou, Shenru A-Song, Selangi Dumil, and others.