Initial bipedalism hypothesis

Initial bipedalism is a speculative hypothesis on biological evolution that essentially holds that vertebrates evolved from aquatic bipeds, and that modern humans represent a direct evolutionary lineage from those aquatic bipeds (marine homonculus) and not the ape Hominoidea lineage. It is primarily promoted by François de Sarre and his Centre d'Etudes et de Recherches sur la Bipedie Intiale (CERBI), which published a journal called Bipedia from 1988 to 2010.