noun
hydrozoans
Refers to the class Hydrozoa, a group of small predatory animals including hydras and Portuguese man o' war. Used in biological and taxonomic contexts.
ヒドロ虫類は刺胞動物門に属する。
Hydrozoans belong to the phylum Cnidaria.
この海域では多様なヒドロ虫類が観察される。
A variety of hydrozoans are observed in this sea area.