Seabed (noun)

The bottom of the sea.

Origin:

Compound noun, composed of the nouns sea and bed.

Examples:

1. The seabed is home to a wide variety of marine life.
2. They are studying the seabed to find new oil reserves.
3. The seabed is covered in sand.
4. The shipwreck was discovered on the seabed.
5. The diver explored the seabed to find valuable treasures.