<p>THIS LISTING IS FOR <b>ONE BLACK SEA FAN RANGING BETWEEN 14" TO 18" FROM FURTHEST POINT TO POINT</b>.BLACK CORAlS OR ANTIPATHARIANS ARE COLONIAL ANIMALS, RELATED TO SEA ANEMONES AND STONY CORALS.  THEY ARE NAMED FOR THE COLOR OR THEIR STIFF, BLACK OR BROWNISH SKELETON.  TINY SPINES FOUND ON THE SURFACE OF THE SKELETON ARE DISTINCTIVE AMONG CORALS. THEY ARE SOMETIMES REFERRED TO AS LITTLE THORN CORALS.  OF THE MORE THAN 150 SPECIES OF BLACK SEA FANS,  MANY HAVE A TREE LIKE GROWTH FORM, CREATING A FAN SHAPE OR ELABORATE TANGLE OF TREE LIKE BRANCHES.  THESE  ARE CARNIVORES CREATURES.  THEY FIRMLY ATTACHED TO THE SEA FLOOR, COLONIES ARE SWEPT BY SWIFT CURRENTS WHICH MOVE ANIMAL PLANKTON OVER THE POLYPS.  POLYPS ARE  COMMONLY FOUND ON THE DOWN STREAM SIDE OF BRANCHES.  THE BRANCHES' SPINES STINGS THEIR PREY TO DEATH AND FEED THRU THE POLYPS.  BLACK SEA FANS GROW ON AN AVERAGE OF 2.5" PER YEAR AND CAN GROW MORE THAN 6 FEET.  THESE SPECIES ARE FOUND IN ALL OCEANS, BUT MOSTLY IN DEEP TROPICAL WATERS. THEY HAVE BEEN FOUND IN DEPTHS  TO 20,000 FEET AND CAN LIVE MORE THAN 70 YEARS. THE BLACK  SEA FAN PICTURED IN THIS LISTING IS AN EXAMPLE OF WHAT YOU CAN EXPECT.  EACH BLACK SEA FAN HAS ITS OWN UNIQUE GROWTH PATTERN.