noun
Cellana toreuma (limpet species)
A species of limpet found in Japan. Colloquially often called ヨメガカサ. The full name is 嫁が笠貝.
See also: 嫁が笠貝
磯でヨメガカサをよく見かけます。
I often see Cellana toreuma limpets on the rocky shore.
Full scientific/common name for the same species; ヨメガカサ is a colloquial shortening.
The name literally means 'bride's umbrella' or 'bride's hat', likely from the shell's shape. The exact origin is uncertain.