甲こう殻かく類るい

こ

う

か

く

る

い

Meanings

1

noun

crustacean

Biological term for the class Crustacea, including crabs, shrimp, lobsters, and barnacles. Used in scientific and everyday contexts.

節せっ足そく動どう物ぶつ
節足動物 is the broader phylum Arthropoda, which includes crustaceans, insects, and arachnids. 甲殻類 is a subphylum within arthropods.
貝かい類るい
貝類 refers to shellfish (mollusks like clams and oysters), which are often grouped with crustaceans in culinary contexts but are biologically distinct.

From 甲殻 (こうかく, 'shell, carapace') + 類 (るい, 'kind, class'). The term is a direct calque of the scientific Latin 'Crustacea'.