Taking into consideration limited data regarding molecular interactions during and after diving, this investigation was intended to determine the oxidative status of divers before and after scuba diving by monitoring the oxidative status parameters. The prevalence study included a group of 32 male professional police scuba divers, 32 ± 5.1 years old. The examination took place twice: in a resting state before scuba diving and immediately after the dive (to 30 meters for 30 minutes). The oxidative status of the scuba divers was determined by measuring levels of the following oxidative stress markers: the index of lipid peroxidation (measured as TBARS), nitrites (NO2-), superoxide anion radical (O2*-), hydrogen peroxide (H2O2), superoxide dismutase (SOD) and catalase (CAT). Statistically significant increases in levels of NO2- and TBARS were observed after the dive, while there were no statistically relevant changes in levels of O2*-, H2O2, SOD and CAT. Our results have shown that a dive with these characteristics only slightly disturbs redox homeostasis, without serious intermolecular changes that can lead to prominent oxidative stress.