Because it's underwater border of each continent
shelf
Continental Slopes.
Land. Continental shelf.
the continental shelf-edge or shelf-break
the oldest continental shelf is in tortoga
continental shelf
continental slope
The zone of ocean under shelf and continental slope are continental.
The widest continental shelf in Florida is the Gulf continental shelf. It is along the central-west coast of the state.
The continental shelf is a gently sloping, shallow underwater edge of a continent that extends from the shoreline to a steeper drop-off called the continental slope. It is an important part of the ocean ecosystem and is rich in marine life. Oil, gas, and mineral resources can also be found on the continental shelf.
Continental shelf is an undersea extension of a continent. Continental slope connects the continental shelf to the abyssal plain.
Tectonic forces and the climate control the shape of the continental shelf. The continental shelf is the part of the continent that extends into the ocean.