sentences:  Little information is available about the origins and history of circumcision among these peoples, compared to circumcision in the Middle East.For Aboriginal Australians and Polynesians, circumcision likely started as a blood sacrifice and a test of bravery and became an initiation rite with attendant instruction in manhood in more recent centuries.Often seashells were used to remove the foreskin, and the bleeding was stopped with eucalyptus smoke.