also: ひれあしるい
noun
pinnipeds; seals and walruses
Scientific term for the mammalian order Pinnipedia, which includes seals, sea lions, and walruses. Used mainly in zoological contexts.
鰭脚類にはアザラシやセイウチが含まれる。
Pinnipeds include seals and walruses.
水族館で鰭脚類の生態について学んだ。
I learned about the ecology of pinnipeds at the aquarium.
Compound of 鰭 (ki, 'fin') + 脚 (kyaku, 'leg') + 類 (rui, 'category'), literally 'fin-legged category'. The reading ききゃくるい is the on'yomi, while ひれあしるい is a mixed kun'yomi reading.