seabed

2. The solid surface beneath a body of water where sediment collects.

Scientists mapped the seabed to study underwater mountains.

3. The habitat at the bottom of the ocean where many creatures live.

The seabed is home to worms, clams, and tiny crabs.

4. The underwater ground that can hold sunken ships and treasure.

Divers found an old shipwreck resting on the seabed.