Chitin is the most significant polysaccharide that can be obtained from the shells of crustaceans. In addition, the appearance of new application areas of chitin and chitosan is increasing, and the claim for new sources of chitin is increasing. For these reasons, this study was the first time for the new chitin chitosan sources from The Mediterranean Limpet (Patella caerulea) species. The physicochemical properties of chitin and chitosan obtained from the Mediterranean Limpet were determined. In addition, Fourier Transforms Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analyzes were performed. The chitin and chitosan yields of the Mediterranean Limpet were 43.42±0.78% and 72.93±1.02%, respectively. Chitin and chitosan from P. caerulea shells were found to exhibit some similarities with those from other shellfish. The %DA and %DD of chitin and chitosan obtained from P. caerulea shells were calculated as 14.32 and 85.68%, respectively. Chitin and chitosan obtained from the shells of P. caerulea can replace other chitin and chitosan in regards to use and applications. For this reason, the shells of P. caerulea are a talented alternative foundation of chitin and chitosan.