List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• pygmy sperm whale (Kogia breviceps)

usually written using kana alone  noun  noun (generic) 

• Burmeister's porpoise (Phocoena spinipinnis)

usually written using kana alone  noun  noun (generic) 

• Antarctic minke whale (Balaenoptera bonaerensis), southern minke whale

rarely used kanji form  usually written using kana alone  noun  noun (generic) 

• Bryde's whale (Balaenoptera brydei)

usually written using kana alone  noun  noun (generic) 

• pygmy right whale (Caperea marginata)

usually written using kana alone  noun  noun (generic) 

• Commerson's dolphin (Cephalorhynchus commersonii), skunk dolphin, panda dolphin

usually written using kana alone  noun  noun (generic) 

• Chilean dolphin (Cephalorhynchus eutropia), black dolphin

usually written using kana alone  noun  noun (generic) 

• Haviside's dolphin (Cephalorhynchus heavisidii)

usually written using kana alone  noun  noun (generic) 

• Hector's dolphin (Cephalorhynchus hectori)

usually written using kana alone  noun  noun (generic) 

• pygmy killer whale (Feresa attenuata)