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 Risk management
 Prolongation of the Land Mass
 Ridges and submarine elevations
 Accretion and suturing

The Land mass, continental shelf, and deep ocean floor

Article 76 states that the continental margin consists of the submerged prolongation of the land mass of the coastal State. The distinction between those parts of the ocean that are a natural prolongation of the land mass and those that are part of the deep ocean floor lies in the tectonic context of the rocks.

Prolongation of the land mass
The topographic differences between the land mass and the deep ocean floor are geological in origin. A morphological connection with the land mass demonstrates prolongation, but does not by itself distinguish between submarine elevations and submarine ridges. 
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Accretion & Suturing
Continents grow by accretion and suturing-the addition of material along the boundaries where plates move together. 
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Ridges & submarine elevations
Identification of oceanic ridges, submarine elevations, and submarine ridges, and distinguishing among them may rely on continuity of morphology, geology and tectonic history with the land mass. 
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Volcanic arcs
Arc volcanism is one of the most significant processes leading to continental growth. 
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