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Japanese Babylon (Babylonia japonica); Japanese ivory shell
spinning top (traditionally made from a Japanese Babylon shell)
海岸でいろいろな種類の貝を拾った。
I picked up various kinds of shells on the beach.
貝殻をコレクションするのが趣味です。
Collecting shells is my hobby.
市場でばい貝を買ってきて煮付けにして食べた。
I bought Babylon shells at the market and made them into a simmered dish.