Massive Horn Coral

Hydnophora microconos

Massive horn coral, scientifically known as Hydnophora microconos, is a member of the family Merulinidae and is associated with coral reefs in the Indo-Pacific region. This coral can be found at depths ranging from the surface down to 40 meters, thriving in tropical waters between 30°N and 34°S latitude. Its structure is characterized by a dense, compact form that can be distinguished from other coral species by its massive, horn-like appearance. The life cycle of the massive horn coral involves both gonochoric and hermaphroditic reproductive strategies. Mature gametes are released into the coelenteron and then spawned through the mouth. The resulting zygote develops into a planktonic planula larva, which eventually undergoes metamorphosis, forming tentacles, septa, and a pharynx before settling on the substrate. Encounters with this coral during dives can be a unique experience, as it contributes significantly to the reef structure. Its conservation status is listed as Least Concern by the IUCN, and it is included in CITES Appendix II.