DESCRIZIONE
A portable diver device (100) for managing diving activities for a diver, wherein the portable diver device (100)comprises at least one data storage unit(102) storing identification data being indicative of an identity of the diver and optionally storing diving related data related to the diver, and a wireless data communications interface (104) configured for wirelessly communicating at least one of the group consisting of the identification data and the diving related data with a diving activities management apparatus (120, 130, 140), when the portable diver device (100) is in sufficient spatial vicinity of the diving activities management apparatus (120, 130, 140).