Alligator Head Foundation - Pillar coral (Dendrogyra cylindrus) is an uncommon species of tropical Atlantic coral, known for its towering form, with cylindrical pillars extending from an encrusting base. Due to threats
Pillar Coral (Dendrogyra cylindrus) - by Tony Rath - JungleDragon
File:Dendrogyra cylindrus (pillar coral) (San Salvador Island, Bahamas) 1 (15513345363).jpg - Wikimedia Commons
First 'baby' pillar corals grow up in lab - Futurity