Keep to the streets with lighting and shelter, and don't go out unnecessarily at night.

The Russian history presentation was ushered in by a brightly lit troika of three horses followed by a red sun.

Planktonic forms in open water usually rely on turbulent mixing of the upper layers by the wind to keep them suspended in sunlit surface waters.

Unlike most other tunicates, they live in the pelagic zone, specifically in the upper sunlit portion of the ocean (photic zone) or sometimes deeper.