まみずくらげじゃありませんでした
真水水母じゃありませんでした
mamizukuragejārimasendeshita

Noun
Desu Copula

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

1. Was not a jellyfish.; Was not clear water.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana