Abstract <p>Beluga whales are gregarious and form different types of social groups, which may include both related and unrelated individuals. Apart from mother–calf dyads, there is almost no information on individual associations in beluga groups. Photo-identification data were used to investigate the social organization of belugas summering off the Solovetsky Islands in the White Sea, Russia, based on sightings of 122 individuals in a reproductive gathering near Cape Beluzhy, Solovetsky Island, in July–August 2022. Data analysis was carried out using SOCPROG 2.9 software. We did not find any social clusters with a stable individual composition within the gathering. Nevertheless, some pairs of individuals usually including a female had high association indices. In general, association indices in pairs decreased during the study period. These results could be influenced not only by the nature of social relationships among belugas, but also by the individual variance of visiting patterns to the gathering area. These factors cannot be differentiated within the framework of the current study. Associations of individuals outside the study area, as well as beyond the study period, remain unknown.</p>