| English nameソート | Scientific nameソート | Found Dateソート | Prefectureソート | City/Locality | 
        
          | Pacific white-sided dolphin | Lagenorhynchus obliquidens | 05, September, 1997 | Hokkaido | Muroran-shi | 
        
          | Finless porpoise | Neophocaena asiaeorientalis | 04, September, 1997 | Aichi-ken | Chita-gun Minamichita-Cho | 
        
          | Finless porpoise | Neophocaena asiaeorientalis | 01, September, 1997 | Chiba-ken | Chosei-gun Ichinomiya-machi ~ Isumi-shi | 
        
          | Finless porpoise | Neophocaena asiaeorientalis | 01, September, 1997 | Chiba-ken | Chosei-gun Ichinomiya-machi ~ Isumi-shi | 
        
          | Ringed seal | Pusa hispida | 31, August, 1997 | Hokkaido | Monbetsu-shi | 
        
          | Pacific white-sided dolphin | Lagenorhynchus obliquidens | 31, August, 1997 | Hokkaido | Muroran-shi | 
        
          | Unidentified Mesoplodon | Mesoplodon sp. | 21, August, 1997 | Tokyo-to | Hachijojimahachijomachi | 
        
          | Minke whale | Balaenoptera acutorostrata | 19, August, 1997 | Hokkaido | Nemuro-shi | 
        
          | Unidentified dolphin | Gen. sp. | 11, August, 1997 | Hyogo-ken | Kobe-shi | 
        
          | Finless porpoise | Neophocaena asiaeorientalis | 08, August, 1997 | Aichi-ken | Chita-gun Mihama-Cho | 
        
          | Cuvier's beaked whale | Ziphius cavirostris | 08, August, 1997 | Okinawa-ken |  | 
        
          | Cuvier's beaked whale | Ziphius cavirostris | 08, August, 1997 | Kanagawa-ken | Yokosuka-shi | 
        
          | Steller sea lion | Eumetopias jubatus | 08, August, 1997 | Hokkaido | Shari-gun Shari-Cho | 
        
          | Pygmy sperm whale | Kogia breviceps | 04, August, 1997 | Hokkaido | Tomakomai-shi | 
        
          | Minke whale | Balaenoptera acutorostrata | 29, July, 1997 | Hokkaido | Nemuro-shi | 
        
          | Sperm whale | Physeter macrocephalus | 25, July, 1997 | Aichi-ken | Toyohashi-shi | 
        
          | Minke whale | Balaenoptera acutorostrata | 24, July, 1997 | Yamaguchi-ken |  | 
        
          | Risso's dolphin | Grampus griseus | 23, July, 1997 | Saga-ken |  | 
        
          | Gray whale | Eschrichtius robustus | 22, July, 1997 | Kochi-ken |  | 
        
          | Minke whale | Balaenoptera acutorostrata | 22, July, 1997 | Hokkaido | Nemuro-shi |