1. the bottom of the sea or ocean

Examples

• Marine biologists study creatures that live on the seabed.
• The shipwreck was discovered on the seabed at a depth of 200 feet.
• Oil companies drill through the seabed to reach underwater reserves.
• Coral reefs grow on the shallow seabed in tropical waters.
• The submarine landed gently on the sandy seabed.
• Scientists use special cameras to explore the deep seabed.