ぬまもつじゃありませんでした
沼鯥じゃありませんでした
numa motsujārimasendeshita

Noun
Desu Copula

The polite, past negative form of ぬまむつ

1. Was not a swamp hagfish.; Was not a swamp hagfish (polite past negative).

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana