List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• calla (Zantedeschia aethiopica)

usually written using kana alone  noun  noun (generic) 

• stag seaweed (Codium fragile), green sea fingers, dead man's fingers, felty fingers, forked felt-alga, sponge seaweed, green sponge, green fleece, oyster thief

usually written using kana alone  noun  noun (generic) 

• black-tailed gull (Larus crassirostris)

usually written using kana alone  noun  noun (generic) 

• sea snake
• worm eel (Ophichthidae spp.), snake eel

usually written using kana alone  noun  noun (generic) 

• storm petrel (any bird of family Hydrobatidae)

search-only kanji form  usually written using kana alone  noun  noun (generic) 

• black lily (Fritillaria camtschatcensis), Kamchatka lily, Kamchatka fritillary

usually written using kana alone  noun  noun (generic) 

• sable (Martes zibellina)

usually written using kana alone  noun  noun (generic) 

• common scoter (Melanitta nigra), black scoter (Melanitta americana)

search-only kanji form  usually written using kana alone  noun  noun (generic) 

• Pacific bluefin tuna (Thunnus orientalis)

usually written using kana alone  noun  noun (generic) 

• gray bunting (Emberiza variabilis), grey bunting