コタマガイ

Meanings

1

Gomphina melanegis (species of Venus clam)

usually written using kana alone

A specific species of small clam found in Japan; primarily a biological term.

コタマガイは日本にほんの砂すな浜はまで見みられる小ちいさな二に枚まい貝がいです。
The Gomphina melanegis is a small bivalve found on sandy beaches in Japan.