also: たまがいか
noun
Naticidae; moon snails
Taxonomic family name for a group of marine gastropods commonly called moon snails.
タマガイ科の貝は世界中の海に分布している。
Shells of the family Naticidae are distributed in seas around the world.
From タマガイ (moon snail) + 科 (taxonomic family suffix). The exact derivation of タマガイ is uncertain.