Rough sponge - Rough sponge

Japanese: ザラカイメン - ざらかいめん
Rough sponge - Rough sponge

It is a marine animal belonging to the order Monostenosponges, class Vulgaris, phylum Porifera, and family Polyspongiidae. It is widely distributed in warm seas south of the Chubu region of Honshu, and inhabits the lower intertidal zone of coastal waters and on rocky reefs with currents in the subtidal zone. It is a long, slender, vase-shaped sponge, and many vase-shaped sponges are often united where they attach to rocks. It can reach a height of several tens of centimeters. The outer surface of the body is rough and covered with protrusions several millimeters high. The inner surface of the cavity is smooth. The cavity also has many outlets (ostreaks) about 1 millimeter in size. The spicules are only rod-shaped bodies with sharp points at both ends, but the sponge tissue is well developed and the quality is strong. There are two types of sponges: purple and orange.

[Takaharu Hoshino]

[Reference] | Sea sponge
Rough sponge (ecology)
A common sponge that lives on the coasts of Japan, it has a long, slender, pot-like shape. Family: Zarcospongiidae © Underwater Fort Enterprises, Isamu Soyama ">

Rough sponge (ecology)


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

海綿動物門尋常海綿綱単骨海綿目ザラカイメン科に属する海産動物。本州中部地方以南の暖海に広く分布し、海岸の潮間帯下部から亜潮間帯の流れのある岩礁の上などに生息する。細長い壺(つぼ)状の海綿で、岩に付着する部分で多くの壺状の海綿が合体していることが多い。高さは数十センチメートルに達することがある。体の外表は高さ数ミリメートルの突起で覆われてざらざらしている。中腔(ちゅうこう)の内表面は平滑である。また、中腔には1ミリメートル程度の流出口(大孔(だいこう))が多数開いている。骨片は両端のとがった桿状体(かんじょうたい)のみであるが、海綿質がよく発達しているので質は強い。紫色と橙(だいだい)色を帯びたものとの2種類の色彩のものが存在する。

[星野孝治]

[参照項目] | 海綿
ザラカイメン(生態)
日本の海岸に生息する尋常海綿で、細長い壺状を呈す。ザラカイメン科©水中フォート・エンタープライズ 楚山いさむ">

ザラカイメン(生態)


出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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