| English nameソート | Scientific nameソート | Found Dateソート | Prefectureソート | City/Locality | 
        
          | Cuvier's beaked whale | Ziphius cavirostris | 19, July, 1997 | Hokkaido | Tokachi-gun Urahoro-Cho | 
        
          | Dall's porpoise | Phocoenoides dalli | 17, July, 1997 | Hokkaido | Shari-gun Shari-Cho | 
        
          | Finless porpoise | Neophocaena asiaeorientalis | 11, July, 1997 | Chiba-ken | Chosei-gun Ichinomiya-machi ~ Isumi-shi | 
        
          | Finless porpoise | Neophocaena asiaeorientalis | 11, July, 1997 | Chiba-ken | Chosei-gun Ichinomiya-machi ~ Isumi-shi | 
        
          | Steller sea lion | Eumetopias jubatus | 09, July, 1997 | Hokkaido | Shari-gun Shari-Cho | 
        
          | Steller sea lion | Eumetopias jubatus | 09, July, 1997 | Hokkaido | Shari-gun Shari-Cho | 
        
          | Pacific white-sided dolphin | Lagenorhynchus obliquidens | 03, July, 1997 | Hokkaido | Muroran-shi | 
        
          | Pacific white-sided dolphin | Lagenorhynchus obliquidens | 02, July, 1997 | Hokkaido | Tokoro-cho | 
        
          | Dall's porpoise | Phocoenoides dalli (dalli type) | 02, July, 1997 | Hokkaido | Tokoro-cho | 
        
          | Dall's porpoise | Phocoenoides dalli | 30, June, 1997 | Hokkaido | Otaru-shi | 
        
          | Common dolphin | Delphinus delphis | 28, June, 1997 | Ehime-ken |  | 
        
          | Dall's porpoise | Phocoenoides dalli | 27, June, 1997 | Hokkaido | Otaru-shi | 
        
          | Unidentified Mesoplodon | Mesoplodon sp. | 25, June, 1997 | Hokkaido | Tomamae-gun Shosanbetsu-Mura | 
        
          | Dall's porpoise | Phocoenoides dalli | 23, June, 1997 | Hokkaido | Otaru-shi | 
        
          | Finless porpoise | Neophocaena asiaeorientalis | 22, June, 1997 | Fukuoka-ken | Fukuoka-shi | 
        
          | Dwarf sperm whale | Kogia sima | 16, June, 1997 | Miyazaki-ken | Miyazaki-shi | 
        
          | Dall's porpoise | Phocoenoides dalli | 13, June, 1997 | Hokkaido | Mashike-gun Mashike-Cho | 
        
          | Unidentified baleen whale | - | 12, June, 1997 | Osaka-fu | Takaishi-shi | 
        
          | Dall's porpoise | Phocoenoides dalli | 10, June, 1997 | Hokkaido | Rumoi-shi | 
        
          | Finless porpoise | Neophocaena asiaeorientalis | 10, June, 1997 | Mie-ken |  |