Biomineralization is a widespread and diverse process, and it refers to a set of processes by which organisms convert dissolved ions from the environment into solid minerals. More than 60 minerals participate in the mineralization process, and almost all eukaryotes participate. This paper deals in more detail with bivalves that have been extensively researched due to their use for commercial purposes. It has been observed that the growth growth lines of the valves result mainly from periodic or seasonal, daily or tidal processes, although random growth anomalies can also occur which can be triggered by stressful events. Therefore, the growth pattern on the valve of the individual is visible and primarily reflects changes in its environment. For this reason bivalves are rearded as biological archives. Information about the biosphere or the chemical composition of the ocean can be obtained thanks to the valve of bivalves, which serve as archives of the environment surrounding the individual. Although it is not yet known how organisms form minerals, we do know how they control their formation. Some of the methods for researching bivalve shells as biological archives are LA-CP-MS method, Mg/Ca thermometry, lead pollution or Pb concentration in the shell growth and observation of changes in the carbonate base in bivalve valves.