| Natural radionuclides (outline of cosmic ray nuclides) | 放射性炭素同位体による年代推定（海洋化学コース）へリンク | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=144 | Course '放射性炭素同位体による年代推定法' |
| Natural radionuclides (outline of cosmic ray nuclides) | 溶存有機物の年代推定（海洋化学コース）へリンク | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=145 | Course '溶存有機炭素の14C年代推定' |
| Natural radionuclides (outline of cosmic ray nuclides) | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=472 | Course '天然放射性核種（宇宙線核種の概要）' |
| Tritium (Tritium) - Details of cosmic-ray radionuclides - | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=473 | Course 'トリチウム（三重水素）－宇宙線放射性核種の詳細－' |
| CTD water sampling system | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=479 | Course 'CTD採水システム' |
| Introduction Course of Department of Marine Biology | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=480 | Course '海洋生物科学科の紹介コース' |
| Mini-Column "The ABC's of Oceanographic observation" | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=481 | Course 'ミニコラム「海洋観測のいろは」' |
| Radionuclides of carbon, beryllium, and iodine (Details of cosmic-ray radionuclides) | Radiocarbon isotope dating (link to Course in Marine Organic Materials) | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=1457 | Course ' Radiocarbon Isotope Dating Method' |
| Radionuclides of carbon, beryllium, and iodine (Details of cosmic-ray radionuclides) | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=482 | Course '炭素、ベリリウム、ヨウ素の放射性核種（宇宙線放射性核種の詳細）' |
| Drop-type CTD | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=483 | Course '投下式CTD' |
| Decay Series_Uranium Series & Thorium Series | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=497 | Course '崩壊系列_ウラン系列＆トリウム系列' |
| Potassium-40, Rubidium-87 (natural radionuclides) | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=498 | Course 'カリウム40、ルビジウム87（天然放射性核種）' |
| Marine Radionuclides (Summary) | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=499 | Course '海洋の放射性核種（まとめ）' |
| Niskin water sampler | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=504 | Course 'ニスキン採水器' |
| Faculty（OOKI Atsushi・School of Fisheries Sciences Department of Marine Biology） | Link URL to the HP of the Ooki-Nomura Laboratory | https://hokusui-ocean-biogeochemistry.jimdofree.com/ | External website |
| Faculty（OOKI Atsushi・School of Fisheries Sciences Department of Marine Biology） | Linked URLs to the Hokkaido University Researchers' Brochure (OOKI Atsushi) | https://researchers.general.hokudai.ac.jp/profile/ja.301932e3031d60c9520e17560c007669.html | External website |
| Faculty（OOKI Atsushi・School of Fisheries Sciences Department of Marine Biology） | URL to the column (large tree) category | https://repun-app.fish.hokudai.ac.jp/course/index.php?categoryid=197 | Unknown |
| Faculty（OOKI Atsushi・School of Fisheries Sciences Department of Marine Biology） | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=506 | Course '教員紹介（大木淳之・水産学部海洋生物科学科）' |
| Collection of courses in Funka Bay | Eruption Bay surface clockwise horizontal circulation (Mr. Kobayashi, training ship navigator) | https://www.jstage.jst.go.jp/article/kaiyou/28/4-5-6/28_51/_article/-char/ja | External website |
| Collection of courses in Funka Bay | Japanese | https://repun-app.fish.hokudai.ac.jp/course/view.php?id=507 | Course '噴火湾のコース集' |
