Antler Coral

Overview

Pocillopora grandis, commonly known as antler coral, is a colonial stony coral belonging to the family Pocilloporidae. It is a significant reef-building species widely distributed across the tropical Indo-Pacific, extending from the Red Sea to the Eastern Tropical Pacific.

Appearance

This coral forms large, hemispherical colonies that can exceed one meter in diameter. It is characterized by stout, upright, and flattened branches that are often irregularly divided. The surface of the colony is covered in small, regular, and prominent bumps known as verrucae, which provide a rough texture. Colonies typically exhibit shades of beige, brown, or purple, with coloration influenced by the presence of symbiotic zooxanthellae within the coral tissue.

Distribution & Habitat

Antler coral is found in diverse marine environments, ranging from the Red Sea and the Indian Ocean to the central and eastern Pacific, including the Hawaiian Islands and the coasts of Panama and Ecuador. It thrives on hard substrates and is particularly common in high-energy areas such as exposed reef fronts where it can withstand strong currents and wave action. Due to its substantial size and complex branching structure, it serves as a vital habitat, providing shelter for a variety of reef-dwelling fish and invertebrates.

Biology & Behavior

Like many corals in its genus, Pocillopora grandis maintains a symbiotic relationship with zooxanthellae, which provide essential nutrients through photosynthesis. It is a diurnal species that also captures plankton and organic particles from the water column. While generally resilient, it may undergo bleaching if exposed to prolonged periods of elevated water temperatures.