Oceanic trenches
Continental shelf
Cape
Peninsula
Depressions
Gulf
Plain
Plateau
Mountains
It is a section of the land that extends into the sea
Flat or gently undulating land with an altitude of no more than 200 metres above sea level
High plain over 200 metres in altitude
It is a gentle incline that extends out from the continents under the marine water
It is a part of the sea that extends into the sea
Elevated land more than 600 metres in altitude with steep slopes.
Narrow elongated depressions
Sunken areas that are usually crossed by rivers and sometimes occupied by lakes
It is an extension of the land surruonded by water on all but one side