Icewater maybe

[luvsmuzik]

Three cloud layers
Atmosphere at 2 
Sun strength at 7
Render time two hours

I don't have a submarine suitable, maybe I will sink a freighter 

[Jo Kariboo]

Yes, it could very well be frazil ice from underwater.

https://www.travelblog.org/Photos/2101824

[Dune]

Indeed. Nice one. Sunken freighter would be cool!

[luvsmuzik]

Yes, it could very well be frazil ice from underwater.

https://www.travelblog.org/Photos/2101824

Oh my goodness what a great site and interesting documentation of a journey! Thank you Jo Kariboo!
I continue to experiment......