 | International Hydrographic Organization. 1953. p. 32. Retrieved 29 April 2020. 瓶子岩 Official website of Hiyama Prefecture, Hokkaido (in Japanese) かもめ島 Archived... 41 KB (5,329 words) - 20:09, 12 April 2024 |
 | Archived 2011-07-20 at the Wayback Machine Esashi Town Guide (in Japanese) 瓶子岩 Archived 2007-07-29 at archive.today Official website of Hiyama Prefecture... 8 KB (805 words) - 06:55, 29 August 2023 |