European common cuttlefish (Σουπιά)

Hi DespinaTsafetopoulou, Would you mind removing your shell photos from the Osteology Mission? Osteology is actually the study of vertebrate bones. It's a detailed study of the structure of bones, the skeletal elements, teeth, morphology, function and disease. Osteology aids in identifying vertebrate remains with regard to age, death, sex, growth, and development. From what I understand is shells are actually exoskeletons created by marine mollusks. Thank you for your understanding! :)