母の声の様子から、すぐに何か異変があったと気づいた。
From the sound of my mother's voice, I realized at once that something was wrong.
今年は海水温が高く、漁場に異変が起きている。
Sea temperatures are high this year, and something unusual is happening in the fishing grounds.
体に異変を感じたら、すぐに医師に相談してください。
If you notice anything abnormal in your body, consult a doctor right away.