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surface of the ocean
Surface?
0 mm. When you watch the tide go out and see rocks emerge, the ocean bottom is now at the ocean surface.
the ocean-bottom
Surface
The opposite of bottom would be the top, so the oceans surface is the opposite of the ocean floor/bottom.
surface
The antonym is bottom.
yes
The amount of sunlight increases
circulates from the bottom to the top
"upwelling"