Sponge - Sponge

Japanese: カイメン(海綿) - カイメン
Sponge - Sponge
A general term for the lowest class of multicellular animals, the sponges. Except for some freshwater sponges, they are widely distributed from the intertidal zone to the bottom of the deep sea, attaching themselves to rocks, seaweed, and shellfish and being unable to move. Their bodies are made up of calcium carbonate and siliceous bone fragments. Water enters through countless small holes in the body wall, passes through a stomach cavity containing collar cells, and comes out through the mouth at the top. Well-known sponges include the common sea sponge, the Okinawa sea sponge, the Japanese sea sponge used for cosmetics and bathing, the blue sponge, and the staghorn sponge.
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Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:
多細胞動物のうちで最も下等な海綿動物の総称。一部の淡水産のものを除き,潮間帯〜深海の底に広く分布し,岩石,海藻,貝の上などに着生して移動できない。体内には炭酸カルシウムやケイ酸質の骨片が組み合わさっている。体壁にある無数の小孔から水がはいり,襟(えり)細胞のある胃腔を通って上端の口から出される。海岸に普通なダイダイイソカイメン,クロイソカイメン,化粧・浴用に用いるユアミカイメン,カイロウドウケツカイメン,ホッスガイなどが知られる。
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