Unit 3: Rivers and coasts - coral reefs

Coral reefs

Source: https://i.ytimg.com/vi/-3eg01T7aRY/maxresdefault.jpg

Source: http://www.slideshare.net/oraljohnson1/coral-reefs-44949767

Conditions for their existence 

Areas holding favorable conditions for corals

Source: http://www.slideshare.net/ecumene/75-coral-reefs-presentation

Types of coral reefs

Source: http://www.marinebio.net/marinescience/04benthon/crform.htm

Source: http://oceanworld.tamu.edu/students/coral/coral2.htm

Impacts on coral reefs

Source: http://www.slideshare.net/ecumene/75-coral-reefs-presentation