まみずくらげじゃなかったです
真水水母じゃなかったです
mamizukuragejanakattadesu

Noun
Desu Copula

The polite, past negative form of まみずくらげ

1. Wasn't a jellyfish.; Wasn't clear water.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana