Dema Deity is a concept introduced by Adolf Ellegard Jensen following his research on religious sacrifice.
[1] Jensen was a German ethnologist who furthered the theory of Cultural Morphology founded by Leo Frobenius.
[2] The term dema comes from the Marind people of southwest Papua and has been used to refer to similar concepts in Melanesian Religion and elsewhere.
In some cases, such as in the Hainuwele myth of Seram Island recorded by Jensen, it is claimed that from their dismembered bodies, blood, etc., came the different communities that are now in existence, together with their territory.
[3] Both local culture and natural environment remain infused with the supernatural power of these creative deities.