A system for monitoring a pool containing a liquid such as water, comprising - a central processing unit, at least one first element comprising at least one submersible robot (2A, 2B, 2C) provided with capabilities for autonomous propulsion in said pool and being provided with capabilities for communicating, in a submerged position, with at least one second element (2A, 2B, 2C, 5), said first element comprising a plurality of submersible robots and/or said second element being a master submersible robot, - sensors (15, 150) capable of producing measurements of a value that represents at least one disturbance of said pool compared to a reference state and being placed on board said submersible robots, the system being configured to process in processing means the outputs of said sensors (15, 150) in order to trigger at least one action relating to information on the disturbance of the pool compared to a reference state by means of information means, the monitoring system comprising actuation means for propulsion capabilities and the submersible robots comprising energy accumulation means capable of supplying electrical energy to the equipment placed onboard said robots, the monitoring system comprising electrical energy power supply means, the electrical energy power supply means being intended to interact with the energy accumulation means to ensure it is recharged and being placed onboard the central processing unit, the monitoring system comprising capability for tracking the robots in three dimensions comprising capability for communication between the robots and the central processing unit, the central processing unit being configured to position the robots on the basis of communication signals originating from communication capabilities, the actuation means being placed onboard the central processing unit and being configured so as to direct the submersible robots towards the central processing unit to make the supply means interact with the accumulation means in order to ensure recharging of the latter when the electrical energy stored in the accumulation means is less than a predetermined energy threshold. - a central processing unit, at least one first element comprising at least one submersible robot (2A, 2B, 2C) provided with capabilities for autonomous propulsion in said pool and being provided with capabilities for communicating, in a submerged position, with at least one second element (2A, 2B, 2C, 5), said first element comprising a plurality of submersible robots and/or said second element being a master submersible robot, - sensors (15, 150) capable of producing measurements of a value that represents at least one disturbance of said pool compared to a reference state and being placed on board said submersible robots, the system being configured to process in processing means the outputs of said sensors (15, 150) in order to trigger at least one action relating to information on the disturbance of the pool compared to a reference state by means of information means, the monitoring system comprising actuation means for propulsion capabilities and the submersible robots comprising energy accumulation means capable of supplying electrical energy to the equipment placed onboard said robots, the monitoring system comprising electrical energy power supply means, the electrical energy power supply means being intended to interact with the energy accumulation means to ensure it is recharged and being placed onboard the central processing unit, the monitoring system comprising capability for tracking the robots in three dimensions comprising capability for communication between the robots and the central processing unit, the central processing unit being configured to position the robots on the basis of communication signals originating from communication capabilities, the actuation means being placed onboard the central processing unit and being configured so as to direct the submersible robots towards the central processing unit to make the supply means interact with the accumulation means in order to ensure recharging of the latter when the electrical energy stored in the accumulation means is less than a predetermined energy threshold.