Whether a volcanic island becomes an atoll or a guyot depends on physical conditions like water temperature, erosion, salinity, sedimentation and sinking rate. Reefs occur in different sizes and shapes, resulting from the hydrological and geological conditions that occur in different areas of the tropics.
Atolls require strong light and warm waters and are limited in the existing seas to tropical and near-tropical latitudes. A large percentage of the world’s atolls are contained in the central and southwestern Pacific and in parts of the Indian Ocean and a number are found, mostly on continental shelves, in the Caribbean area.
|Motiv||2.8 × 2.1 cm, Aquarell|
|Format||20 × 20 cm|