Underwater communication is a challenging issue for underwater robotics. This is especially the case for swarm robotics in confined spaces and turbid waters where neither sonar nor light can be used. This paper presents a new perspective for addressing this issue. The approach is based on artificial electric sense, a sensing ability inspired from weakly electric fish that can perceive their surrounding and communicate in group by interpreting the electric fields generated by themselves or by conspecifics. This concept is implemented on an heterogenous swarm of underwater robots, named subCULTron, which is able to cooperate in order to explore and monitor its environment in the harsh conditions of the Venice Laguna.