surface of the ocean
Top of the ocean
Top of the ocean
Surface
surface
The antonym is bottom.
An antonym for Lagoon is the ocean or sea
Under
open ocean?
Bottom
The antonym is bottom.
what is wrong with this sentence "the bottom of the ocean is different from land masses because the ocean bottom is perfectly flat."
Flower (as the reproductive organ of a plant) doesn't have an antonym. As flowers are often the topmost parts, the nearest thing to an antonym would be the root, at the bottom.