Dimethylsulfoniopropionate (DMSP) is a naturally occurring compound found in marine environments, particularly in phytoplankton. It plays a crucial role in the ocean's sulfur cycle and serves as an osmolyte, helping organisms to cope with stress from changes in salinity and temperature. DMSP is also a precursor to dimethylsulfide (DMS), a gas that contributes to cloud formation and climate regulation. When marine organisms die or are consumed, DMSP is released into the water, where it can be converted to DMS by bacteria, influencing both local ecosystems and atmospheric processes.