A research project undertaken by the ASSISIbf (Fundamentals of Collective Adaptive Systems) is trying to enable cross-species communication, starting with a group of bees and a school of fish. One of the species is given a choice by a robotically controlled lookalike, for example, swim clockwise or anti-clockwise. This choice is then communicated to another lookalike robot in the other species which begins to act out the desired choice encouraging the others to behave in the same way.
This all sounds a bit crazy but the main research goals of the project are to create robotic systems that are able to learn the social language of animals and influence their behaviours which could potentially help in the preservation of endangered species. You can read more about the research project here!