The search of materials of biological origin with specific estates of potential technologic applications whose structure and functions come out from a process of adaptive evolution experienced by the organisms in extreme environments, is one of the most active fields in the modern biophysics. In short, the protein bacteriorhodopsin, acts like a protonic bomb whose photocycle has demonstrated interesting implications in the technologies of optic storage of information by means of holographic methods. In the present work some results of the investigation undertaken by our group are exposed, consistent mainly in the study of the influence that working conditions (pH, state of aggregation of the environment, intensity and time of illumination, etc.) have over photophysical and photochemical states of bacteriorhodopsin as well as in the tracking of the possible presence of bacteriorhodopsin proteins and xantorhodopsin, in the salines of Santa Pola (Alicante, Spain).