Bio-inspiration, the use of principles derived from biological system to the construction of artefacts, has been successfully applied in many areas of engineering. Here I argue that Human-Computer-Interaction can greatly benefit from applying principles found in different areas of biology. While HCI system, in general, can learn from biology, the recent trend of moving away from conventional user interfaces to a more naturalistic interaction makes bio-inspiration timely. To support the case, the paper maps four domains of HCI to areas of biological sciences and gives examples of works that applied the underlying principles.