Frozen in time...

...air bubbles in the stainless steel dog water bowl that stayed out overnight.

Edit:
I was trying to figure out why the bubbles around the perimeter of the bowl radiate out from the center and create these long, drawn out formations...my husband, the brilliant one, explained that the edges of the bowl freeze first, forcing the air towards the center where they finally become entombed. So, to be more accurate, they radiate in towards the center.