Coral is undeniably a marvel - it is the largest structure made by any living group of animals in the world _and_ it is beautiful.
Coral was once thought to be a plant, and because of this coral has been called the garden of the sea. Coral has long been recognised as special - the Ancient Egyptians placed pieces of coral in their tombs to protect against evil spirits because they believed coral contained divine blood. This idea also turns up in Greek mythology: when Perseus severed the head of the Gorgon Medusa, some drops of blood are said to have fallen into the sea and solidified creating coral. We now know that coral is actually the exoskeleton of tiny marine animals that grow together in colonies.
Coral is said to absorb negative energy and quieten the emotions promoting inner peace.