ようこえがわいるかじゃなかった
揚子江河海豚じゃなかった
yōkoegawa irukajanakatta

Noun
Da Copula

The past negative form of ようすこうかわいるか

1. Wasn't a Yangtze River dolphin.; Wasn't a river dolphin of the Yangtze.

Past/Perfective
Negative
Usually Written in Kana