Coral reef, Description, Geochemistry, Origins, & Threats

Coral reef, ridge or hummock formed in shallow ocean areas by algae and the calcareous skeletons of coral polyps and other coelenterates. A coral reef may grow into a permanent coral island. Often called ‘rainforests of the sea,’ coral reefs are home to a spectacular variety of organisms.

Coral reef, Description, Geochemistry, Origins, & Threats

Coral Reefs

Biodiversity, climate change and the fate of coral reefs

Geo explainer: The threats to coral reefs - Geographical

Benthic assemblage on a sandstone tropical reef. (A) overview of the

Threats to Coral - NOAA/AOML

Good bacteria vital to coral reef survival

Coral Reefs

Coral reefs are 'likely to disappear from the Earth' despite climate change talks