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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 | 
        
|---|---|---|---|---|
| Finless porpoise | Neophocaena asiaeorientalis | 06, February, 2000 | Kumamoto-ken | |
| Steller sea lion | Eumetopias jubatus | 05, February, 2000 | Aomori-ken | Higashitsugaru-gun Hiranai-Machi | 
| Stejneger's beaked whale | Mesoplodon stejnegeri | 02, February, 2000 | Aomori-ken | |
| Humpback whale | Megaptera novaeangliae | 01, February, 2000 | Chiba-ken | |
| Sperm whale | Physeter macrocephalus | 30, January, 2000 | Tokyo-to | Hachijojimahachijomachi | 
| Risso's dolphin | Grampus griseus | 27, January, 2000 | Okinawa-ken | Nago-shi | 
| Cuvier's beaked whale | Ziphius cavirostris | 27, January, 2000 | Kagoshima-ken | Akune-shi | 
| Sperm whale | Physeter macrocephalus | 26, January, 2000 | Tokyo-to | Off Miyakejima Island Miyake-mura | 
| Unidentified dolphin | Gen. sp. | 24, January, 2000 | Ishikawa-ken | Komatsu-shi | 
| Northern fur seal | Callorhinus ursinus | 24, January, 2000 | Akita-ken | Oga-shi | 
| Sperm whale | Physeter macrocephalus | 22, January, 2000 | Tokyo-to | Habushiura beach Niijima-mura | 
| Minke whale | Balaenoptera acutorostrata | 21, January, 2000 | Hokkaido | Wakkanai-shi | 
| Bottlenose dolphin | Tursiops truncatus | 20, January, 2000 | Hyogo-ken | Toyoka-shi | 
| Finless porpoise | Neophocaena asiaeorientalis | 16, January, 2000 | Ibaraki-ken | Takahagi-shi | 
| Unidentified Mesoplodon | Mesoplodon sp. | 15, January, 2000 | Akita-ken | |
| Minke whale | Balaenoptera acutorostrata | 12, January, 2000 | Kagoshima-ken | |
| Pygmy sperm whale | Kogia breviceps | 11, January, 2000 | Ibaraki-ken | Hitachinaka-shi | 
| Unidentified Mesoplodon | Mesoplodon sp. | 07, January, 2000 | Hokkaido | Otaru-shi | 
| Minke whale | Balaenoptera acutorostrata | 07, January, 2000 | Wakayama-ken | Higashimuro-gun Nachikatsuura-Cho | 
| Striped dolphin | Stenella coeruleoalba | 07, January, 2000 | Ibaraki-ken | Higashiibaraki-gun Oarai-Machi |