With the relatively recent awareness of the fragility of the natural world environment (Rio Conference "Earth Summit" in 1992), Information Systems (IS) trying to identify and help to manage biodiversity have proliferated. Given the various data that they contain, they are complex applications, hardly accessible to the general public. At the same time, new communication systems allow a more natural assimilation of information: three-dimensional representations of immersive virtual worlds, also known as metaverses. By putting users in a reality reproduction built from IS, all information can be represented in a consistent virtual environment. But turning IS’s data in a coherent metaverse is not a trivial process. Depending the IS’s structure and the availability of metadata, several virtual worlds, representing several level of details, can be generated. Mirror worlds, that try to reproduce reality, are poorly represented without complementary information, not usually stored in Biodiversity Information System (BIS). This paper presents a new component dedicated to the management of specimen’s behavior in BIS. By describing the same action through three aspects of its representation (textual, graphical, and formal rules for agents based simulation), combined to the systematic hierarchical model, it is possible to improve the immersive experience of several users, from the general public to the specialists.