Jellyfish - Jellyfish

Japanese: クラゲ(水母) - クラゲ

A common name for jellyfish-like animals that are suitable for a floating lifestyle among the Coelenterata and Ctenophora. They are divided into the Scyllacea, Hydromedusa, and Ctenophora. With a few exceptions such as the Moon jellyfish, they are usually marine. Most of their body is a colorless, transparent agar, and many are shaped like an upside-down bowl. The lower edge is lined with tentacles. Their staple food is small zooplankton. They are usually dioecious, and their eggs develop into attached polyps, which then bud asexually to become jellyfish. Ctenophora are hermaphrodites and do not have a polyp stage. The Nomura's jellyfish and the Rizon's jellyfish are edible. The cnidocyte toxins are thalassin and congestin, and each time they are stung, the resistance to the toxins is weakened and the person becomes more sensitive, which can be life-threatening.
→ Related topic Polyps

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

腔腸(こうちょう)動物と有櫛(ゆうしつ)動物のうち，浮遊生活に適するクラゲ型の動物の通称。ハチクラゲ，ヒドロクラゲ，クシクラゲ類に分けられる。マミズクラゲなどの少数の例外を除き，普通は海生。体の大部分が無色透明の寒天質で，椀(わん)を伏せたような形のものが多い。下縁には触手が並ぶ。主食は小型の動物プランクトン。普通，雌雄異体で，卵は付着生活をするポリプを経て，無性生殖的に出芽によってクラゲになる。クシクラゲ類は雌雄同体で，ポリプの時期をもたない。エチゼンクラゲ，ビゼンクラゲなどは食用。刺胞毒はタラシンとコンゲスチンで，刺されるたびに抵抗性が弱くなって敏感になり，人命にかかわる場合もある。
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