Stranding News (last update date: 20, February, 2025)
- 08, May , 1984
- Ribbon seal(s) live stranding Kamaishi-shi Iwate-ken
- 06, May , 1984
- Ribbon seal(s) live stranding Kamikita-gun Rokkasho-Mura Aomori-ken
- 04, May , 1984
- Ribbon seal(s) live stranding Shimokita-gun Higashidori-Mura Aomori-ken
- 02, May , 1984
- Ribbon seal(s) live stranding Misawa-shi Aomori-ken
- Ringed seal(s) dead stranding Shari-gun Shari-Cho Hokkaido
- 01, May , 1984
- Pacific white-sided dolphin(s) by-caught Maizuru-shi Kyoto-fu
- 27, April, 1984
- Ribbon seal(s) live stranding Shiranuka-gun Shiranuka-Cho Hokkaido
- 26, April, 1984
- Ribbon seal(s) live stranding Hokkaido
- 25, April, 1984
- Ribbon seal(s) live stranding Misawa-shi Aomori-ken
- Ribbon seal(s) dead stranding Horoizumi-gun Erimo-Cho Hokkaido
- Ribbon seal(s) strayed into a harbor Muroran-shi Hokkaido
- 24, April, 1984
- Dugong(s) dead stranding Okinawa-ken
- Ribbon seal(s) live stranding Horoizumi-gun Erimo-Cho Hokkaido
- Ribbon seal(s) live stranding Akkeshi-gun Akkeshi-Cho Hokkaido
- 23, April, 1984
- Ribbon seal(s) live stranding Hokkaido
- 22, April, 1984
- Ribbon seal(s) live stranding Hiro-gun Hiro-Cho Hokkaido
- Ribbon seal(s) live stranding Hiro-gun Hiro-Cho Hokkaido
- Northern fur seal(s) strayed into a harbor Otaru-shi Hokkaido
- 21, April, 1984
- Ribbon seal(s) live stranding Kushiro-shi Hokkaido
- Ribbon seal(s) dead stranding Shiranuka-gun Shiranuka-Cho Hokkaido