Nebalia bipes (Leaf shrimp)

Japanese: コノハエビ(木の葉蝦) - コノハエビ（英語表記）Nebalia bipes

A small crustacean of the order Pelecanidae and family Pelecanidae (illustration). It lives in intertidal pools and on the sandy, muddy bottom of shallow seas, and at first glance resembles a small shrimp, with a body length of about 1 cm, but the front of the thorax and abdomen is covered by a large, bivalve-like carapace with adductor muscles on both sides. There is a joint at the tip of the carapace, and it has a movable spatula-shaped rostrum. Beneath this rostrum are movable, stalked compound eyes. The whole body is yellowish-white in color. It feeds on organic debris and is said to be a filter feeder, but it is also carnivorous and scavenging, as it will eat fish caught in longlines.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

コノハエビ目コノハエビ科の小型甲殻類（イラスト）。潮間帯の潮だまりや浅海の砂泥底にすみ，体長1cm内外の一見小エビに似た体をしているが，胸部と腹部の前部は左右から閉殻筋をそなえた二枚貝様の大きな背甲で包まれている。背甲の先端に関節があり，可動なへら状の額角をもつ。この額角の下に有柄で可動な赤色の複眼がある。体は全体黄白色を帯びる。有機残骸などを食べ，ろ過摂食性ともいわれているが，はえなわなどにかかった魚を食害するなど，肉食性，腐肉食性でもある。

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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