kurage 海月

Translation

kurage means "Jellyfish" in English.

kurage written with kanji is 海月.
These are jouyou kanji 常用漢字, taught in the second year of shougakkou 小学校.

kurage written with katakana is クラゲ.
kurage written with hiragana is くらげ.

kurage may also be written as 水母 or 水月.

kurage is a jukujikun 熟字訓 reading for 海月 in this word. That is: those kanji are only read that way when they come together like that.

kuragehime 海月姫, meaning literally "Princess Jellyfish," is a manga, anime, and drama featuring a jellyfish otaku girl as protagonist.
Despite the name, a Jellyfish isn't a fish.^[1]

Phyllorhiza punctata

Chrysaora fuscescens

manga kuragehime 海月姫

Beware: some kanji that are difficult to handwrite are easy to type on the computer, which may skew the usage statistics.