Coral reefs are one of the most important marine communities in tropical and subtropical seas.
Although coral reefs have been well described for over 100 years, it is only within the later half of this century that the global importance of reefs has become known. Only recently have scientists discovered the ways a reef can capture the energy of the sun and convert it into food and the ingenious ecological strategies which enable reefs to survive in the nutrient-poor waters of the tropical oceans. Acting as plant and animal simultaneously, corals convert solar energy into food, recycle wastes or nutrients and create the reef structure which is home to the world's most beautiful and diverse communities. Rainforests of the sea. Coral reefs are among nature's most spectacular and beautiful creations.