The ocean, in a pond only the top layer will freeze!
A pond, being fresh water and smaller, would freeze first. Sea water, being salty and larger, also constantly affected by the tides and wind, will only freeze in very extreme coldness.
By turning to ice
It freezes first on the sides where the water is very shallow, thereby less able to circulate heat up from the bottom to keep from freezing.
The bottom of the ocean doesn't freeze.
ocean,lake and pond
A pond because it is smaller than an ocean generally and isn't as salty.
In extreme freezing conditions, a shallow pond may freeze down to the bottom. If the pond is at least 18 inches deep, the surface may freeze down to a couple of inches.
if it is a cosmetic pond put your fish in an aquarium and drain your pump so it doesn't freeze and break drain your pond
The whole ocean would freeze if it was cold enough.
below 5 degrees
chemical change
chemical change