A submerged ridge. Reefs usually angled downstream from a point of land or the head of an island. Typically, they took shape as a gradual slope that rose to within a few feet of the surface, followed by a sharp drop-off.
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A submerged ridge. Reefs usually angled downstream from a point of land or the head of an island. Typically, they took shape as a gradual slope that rose to within a few feet of the surface, followed by a sharp drop-off.