Coral reef to form fringing reefs, and can eventually grow become a barrier reef. Where the bottom is rising, fringing reefs can grow around the coast, but coral raised above sea level dies. If the land subsides slowly, the fringing reefs keep pace by growing upwards on a base of older, dead coral, forming a barrier reef enclosing a lagoon between the reef and the land. A barrier reef can encircle an island, and once the island sinks below sea level a roughly circular atoll of growing coral continues to keep up with the sea level, forming a central lagoon. Barrier reefs
Coral reef of Varadero such as in Varadero, to understand reef resilience. Coral reef of Varadero Coral reef of Varadero is a coral reef located in the Bay of Cartagena, Colombia. Its paradoxical existence, harboring high coral cover and diversity despite the poor water quality and sediments discharged during the last 500 years by the Canal del Dique into the Bay, has drawn special interest by the scientific community and local and international media. The persistence of the Varadero reef is currently threatened by a project to modernize Cartagena’s port, not only by the direct damage produced by the dredging of a new shipping