Coral reefs include some of the most diverse ecosystems on the planet. These reefs provide habitats to a multitude of different organisms that fulfil specialised ecological roles. Each role significantly contributes to maintaining a balanced and healthy reef ecosystem where biodiversity can thrive.
In recent years, coral reefs have shown significant levels of stress as a result of increased anthropogenic (human) activity. This has often been associated with global warming, ocean acidification, pollution, coastal development and tourism. Coral cover has drastically reduced on several reefs across the world, with the loss of entire reefs occurring in certain areas. Overfishing and unsustainable harvesting has also led to a decline in fish and invertebrate populations, having serious consequences on the health and biodiversity of coral reefs through the loss of important ecological interactions.