ocean floor

• Le fond de l'océan, comprenant les plaines abyssales, les fosses océaniques, les dorsales sous-marines et le plancher océanique.

The bottom of the ocean, including the seabed, abyssal plains, trenches, and underwater mountain ranges.

1. B2formal

   The solid surface at the bottom of the ocean, including features like plains, mountains, and trenches.

   fond océanique

   • Scientists explore the ocean floor using submersibles.
   • The ocean floor is covered with sediment and marine life.
   • Volcanic activity can reshape the ocean floor over time.