Soldier crab

Japanese: soldier crab（英語表記）soldiercrab

...This crab, with a carapace length of about 1 cm, walks around in groups on the tidal flats at low tide, eating food. The way it lifts its body and walks forward gives it a brave appearance, which is why it is called army crab or soldier crab. However, when the tidal flats have little moisture, it does not walk around in groups, but instead eats food in the sand and mud, and pushes the unused sand and mud up to the surface in the form of tunnels.

*Some of the terminology that mentions "soldier crab" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…甲長1cmほどのカニで，干潮時の干潟を群れをなし，餌を食べつつ歩き回る。体をもち上げて前へ歩く姿が，いかにも勇ましい印象を与えarmy crabとかsoldier crabの英名がある。ただし，水分の少ない干潟の場合には群れをなして歩き回ることはなく，砂泥中で餌を食べ，不用となった砂泥を表面にトンネル状に押し上げる。…

※「soldier crab」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典第２版について | 情報

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