blood clam; ark shell
Refers specifically to Scapharca broughtonii, a large edible clam with red flesh, often used in sushi and sashimi.
I ate fresh blood clam at the sushi restaurant.
Ark shell is delicious when made into sashimi.
Kanji spelling; usually written in kana.
Katakana spelling, common in biological or culinary contexts.
Hiragana spelling; the word is usually written using kana alone.
The name 赤貝 literally means 'red shellfish', referring to the reddish color of its flesh.