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| English nameソート | Scientific nameソート | Found Dateソート | Prefectureソート | City/Locality | 
|---|---|---|---|---|
| Minke whale | Balaenoptera acutorostrata | 09, June, 1997 | Aomori-ken | |
| Dall's porpoise | Phocoenoides dalli | 06, June, 1997 | Hokkaido | Otaru-shi | 
| Finless porpoise | Neophocaena asiaeorientalis | 04, June, 1997 | Aichi-ken | Chita-gun Mihama-Cho | 
| Dall's porpoise | Phocoenoides dalli | 02, June, 1997 | Hokkaido | Otaru-shi | 
| Pygmy sperm whale | Kogia breviceps | 30, May , 1997 | Kumamoto-ken | Amakusa-gun Reihoku-Machi | 
| False killer whale | Pseudorca crassidens | 29, May , 1997 | Kagoshima-ken | |
| Killer whale | Orcinus orca | 27, May , 1997 | Hokkaido | Muroran-shi | 
| Common dolphin | Delphinus delphis | 26, May , 1997 | Ibaraki-ken | Hitachi-shi | 
| Minke whale | Balaenoptera acutorostrata | 26, May , 1997 | Ishikawa-ken | Kanazawa-shi | 
| Stejneger's beaked whale | Mesoplodon stejnegeri | 20, May , 1997 | Hokkaido | Shari-gun Shari-Cho | 
| Finless porpoise | Neophocaena asiaeorientalis | 17, May , 1997 | Aichi-ken | Chita-gun Minamichita-Cho | 
| Unidentified Mesoplodon | Mesoplodon sp. | 16, May , 1997 | Niigata-ken | Joetsu-shi | 
| Spotted seal | Phoca largha | 15, May , 1997 | Kanagawa-ken | Chigasaki-shi | 
| Harbour porpoise | Phocoena phocoena | 14, May , 1997 | Hokkaido | |
| Finless porpoise | Neophocaena asiaeorientalis | 12, May , 1997 | Aichi-ken | Chita-gun Mihama-Cho | 
| Finless porpoise | Neophocaena asiaeorientalis | 08, May , 1997 | Aichi-ken | Chita-gun Minamichita-Cho | 
| Stejneger's beaked whale | Mesoplodon stejnegeri | 07, May , 1997 | Niigata-ken | |
| Pacific white-sided dolphin | Lagenorhynchus obliquidens | 02, May , 1997 | Ishikawa-ken | Nanao-shi | 
| False killer whale | Pseudorca crassidens | 02, May , 1997 | Okinawa-ken | Ishigaki-shi | 
| Unidentified Mesoplodon | Mesoplodon sp. | 01, May , 1997 | Hokkaido | Hakodate-shi |