In Japan, Nemacystus decipiens, a kind of the family Spermatochnaceae, is called as Japanese name mozuku (another name, ito-mozuku), but the family Spermatochnaceae has many kinds.
日本ではモズク科の一種・Nemacystusdecipiensに「モズク」（別名イトモズク）の和名が当てられるが、他にも多くの種類がある。