This work propose a model of multiple emergence phenomenon, which is based on a reactive multi-agent system. Each agent is defined as a minimal living-like entitie exchanging information for aggregation with others. This model is evaluated from several simulations implemented on the MadKit platform. Thus we can show and analyze different interesting properties of emergent structures such as robustness and adaptability. Finally, this study is positioned in a larger objective of understanding and designing artificial and natural complex systems.