What is the bottom of a wave in the ocean called?

Question

What is the bottom of a wave in the ocean called?

Answer 1

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Answer 2

The lowest part is the "trough", and the highest part is the "crest".

Answer 3

The bottom of a wave is called the trough, the top i the crest. The amplitude or height of the wave is measured from the midpoint up or down.

Answer 4

Trough

Answer 5

I don't think that the bottom, as you are probably thinking, has a name.  As a diver I experience it a surge.  That is a back and forth motion of the water when a wave passes over.  A wave does not touch the bottom until the water depth is the same as the height of the wave that you see on the surface, then it will rise as the bottom rises before cresting.

Answer 6

The trough