Definition

The bottom part of a sea or ocean, usually covered with sand or mud.

Example

Marine life thrives on the seafloor, where many species find their habitat.

Conversation

Have you ever wondered what the seafloor looks like?

I imagine it's full of fascinating creatures and plants.

Yeah, I read that there are even underwater mountains on the seafloor.

That's so cool! We should go scuba diving to see it for ourselves.

Synonyms & Antonyms

Root Explanation

Seafloor is formed from "sea" (from Old English *sǣ*, meaning large body of saltwater) and "floor" (from Old English *flōr*, meaning the lower surface of a room or area). The word "seafloor" refers to the bottom surface of the sea or ocean.

Memory Tip

Think of the 'sea' as a large body of water and 'floor' as the bottom surface — together, they describe the bottom of the sea.

Visually Confused Words