Tardigrades - Kanpo Animals

…This genus is thought to be closely related to mollusks, although their external appearance is quite different. The tiny water bears (Tardigrades) (about 110 species) that live in moss near water bodies walk on four pairs of very short legs with claws. They have no respiratory or circulatory organs.

*Some of the terminology that refers to the phylum "Tardigrade" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…この類は，外形は顕著に異なるが，軟体動物に近縁と考えられる。水辺のコケの中などにすむ微小なクマムシ類〈緩歩動物門〉(約110種)は，つめを備えた4対のごく短い足で歩く。呼吸器官や循環器官はない。…

※「緩歩動物門」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