The peaks in the background look like The Black Tusk. Since the higher of its two peaks is to the south, and appears on the left in this photo, it must have been taken somewhere to the east, and seems to be at or near the treeline. So I would guess that the tarn in the photo may be Helm Lake or another of the tarns near there.
You cannot drive there. The ...
It's called 'Shirasu'. It's the juvenile offspring of anchovies, herrings or sardines.
In other parts of the world it's called 'whitebait' or 'gianchetti', or...other names. The exact species varies from place to place too.