Meaning of the word "ocean floor" in English

What does "ocean floor" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

ocean floor

US /ˈoʊ.ʃən flɔːr/
UK /ˈəʊ.ʃən flɔː/

Noun

the bottom of the ocean, including the continental shelf, continental slope, continental rise, and abyssal plain

Example:
Deep-sea submersibles explore the mysterious ocean floor.
Many unique species of marine life live on the ocean floor.