Pillar Coral, (Dendrogyra cylindricus), is a species of hard coral found in the western Atlantic Ocean. This coral is made up of finger-like projections, growing up from the sea-floor. The pillars can grow up to 8 feet tall, growing on both flat and sloping sea floors at a depth up to 65 feet below sea level. Its polyps generally feed during the day, one of the few types of hard coral to do so.
Ivory Bush Coral, (Oculina varicosa), is a near-threatened species of coral ranging from Cape Hatteras, North Carolina through the Gulf of Mexico and Caribbean. The main concern for the species lies with those found off the coast of east-central Florida. It is listed as a species of concern with the US National Marine Fisheries Service, which states there is not enough information available to list it under the US Endangered Species Act. Oculina coral reefs off Florida have been...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.
- A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.