くまのこかいじゃないです
熊の子貝じゃないです
kumano kokaijanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of くまのこがい

1. It's not a bear cub shell.; It's not a baby bear's shell.

Negative
Polite
Casual Register
Usually Written in Kana