Obesotoma tomiyaensis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.Rosenberg, G. (2013). Obesotoma tomiyaensis (Otuka, 1949). In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576383 on 2017-10-26
