黒潮 くろしお だい蛇行 だこうではありませんでした
kuroshioda idakōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 黒潮大蛇行

1. Was not the Kuroshio Current's great meandering.; Was not a large meander of the Kuroshio Current.

Past/Perfective
Negative
Polite
Formal Register