0 mm. When you watch the tide go out and see rocks emerge, the ocean bottom is now at the ocean surface.
surface of 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 sun is not as close to the bottom of the ocean as it is at the top.
The antonym is bottom.
yes
The amount of sunlight increases
Submarines can see the surface of the ocean with a periscope when they are close to the surface.
The size, and how close to the equator they are.