Estuary
Valley
Island
Peninsula
Plain
Abyssal plain
Hill
Ocean trench
Isthmus
Archipelago
Continental slope
Beach
Gulf
Depression
Delta
Plateau
Mountain
Ocean ridge
Mountain range
Cape
Cliff
Continental shelf
Bay
A group of islands
Steep slope that leads down from the continental shelf into the deepest part of the ocean
Strip of land that extends into the sea
Portion of the sea that is partly enclosed by land
Area of sands or stones next to the sea
Low, flat area of land
Area of low land between mountains
An area lower than the surrounding surface
Long mountain ridge in the abyssal plain
A small gulf
Underwater plateau that surrounds a continent
Vast plateau that forms part of the ocean floor
A natural elevation of the earth's surface, smaller than a mountain
Area of land completely surrounded by water
Strip of land connecting a peninsula to a continent
High, raised plain
High landform with steep sides
The part of the mouth of a river in which its current meets the sea's tide
Area of land that is almost entirely surrounded by water
Long, deep crack in the ocean floor
Steep rock coastal formation
A flat, triangular area of land between branches of the mouth of a river
Group of mountains coneccted to each other