Waves? Clouds? Erm, you're kidding, right? And JICYWW, answers are no, no, no and no.
"And what's different in this pic (taken last month) from any pic taken of the same area....." I was not comparing the two pics I posted. I was comparing the same area at Rangali from a year or 18 months ago.
So what was out of the ordinary / different? Very curious.