Seitaro Kitayama's 1918 adaptation of the folk tale of a fisherman who rides a turtle to an undersea palace, surviving as a short fragment.

Public domain (US): Japanese film published 1918; all works published before 1931 (including foreign works restored under URAA) are public domain in the US (95-year term expired). Source: Internet Archive (https://archive.org/details/urashima-taro-1918).