Coral


 * Coral is a group of marine creatures. Most survive by means of photosynthesis via the Zooxanthella that live in their flesh.  Some are carnivorous and others are filter feeders.  Most are a combination of photosynthetic and filter feeder.  Coral falls into three categories:
 * Soft Coral: examples of these are mushrooms, xeina, and button polyps.
 * Large Polyp Stony LPS: This would be the family that the brains, mussids, and plate corals reside in.
 * Small Polyp Stony SPS: This family consists of species such as the acroporua, milliporua, and montiporua.


 * Most of the coral reefs in the ocean are built from the skeletons of dead SPS such as elk horn coral.