High elevation of the terrain, Group of islands, Group of mountains, Land surrounded by water except on one part., High wall of rock, often next to the coast., Low area surrounded by higher land, Land surrounded by water everywhere., Piece of land that enters the sea., Portion of sea that enters the land, Like a gulf, but smaller., A small mountain, A large area of flat land, Area of sand next to the coast, Low land between mountains, High and flat land, It is an area of flat seafloor at a depth of 4000 metres., It is a sloping plain which joins the continents to the seabed. It is a part of the continental crust, but it is beneath seawater., It is a steep slope which separates the end of the continental shelf from the ocean floor., It is an underwater mountain range in middle of the ocean. They occur in oceanic trenches when magma comes to the surface from the mantle through a large fissure, It is a large depression on the seafloor near a continent. These trenches are the deepest parts of the ocean floor

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