The Great Barrier Reef from space.
Close-up of acropora sp polyps.
Structure of a typical coral polyp.
Structure of Zooxanthellae.
Close-up of Zooxanthellae.
Massive reef structure of the Great barrier reef, Australia.
Solitary coral Fungia sp. showing its outer covering of living tissue, and clearly visible central mouth.
Close-up of acropora sp coenosarc and polyps.
Coral core samples reveal horizontal growth lines.
Darwin’s three stages of atoll formation.
Graphic of typical coral reef zones.