Red Sea Fingers – Alcyonium glomeratum

Red Sea Fingers, scientifically known as Alcyonium glomeratum, is a striking colonial coral species found in the marine environments of the Red Sea. This vibrant and often overlooked organism contributes to the biodiversity of these underwater ecosystems.

Description & Characteristics

Alcyonium glomeratum, commonly known as Red Sea Fingers, is a colonial coral species characterized by its distinctive finger-like projections, which are typically a bright reddish-orange color. Each colony can grow up to 20 cm in height and is composed of numerous polyps, tiny, individual organisms that are connected by a shared tissue. The polyps of Alcyonium glomeratum are covered in tiny, stinging cells called nematocysts, which they use to capture prey and defend themselves from predators.

Habitat and Occurrence

The Red Sea Fingers, Alcyonium glomeratum, is a prominent resident of the Red Sea, particularly in areas of strong currents and moderate wave action. This coral species is found primarily in the neritic zone, which encompasses the shallow waters extending from the shoreline to the edge of the continental shelf. It is commonly observed in rocky reefs and coral rubble, and its vibrant colors add a dash of vibrancy to these already stunning underwater landscapes.

Taxonomy

Alcyonium glomeratum is a member of the Class: Octocorallia, Order: Malacalcyonacea, and Family: Alcyoniidae. This classification reflects its unique evolutionary history and close relationships with other soft corals within the same family.

Feeding

Red Sea Fingers, like many other colonial corals, are filter feeders. They rely on the capture of small organisms, such as brine shrimp nauplii, dust food, lobster eggs, and plankton, to sustain themselves. These tiny creatures are drawn into the polyps’ mouths by currents and water flow, and the stinging nematocysts assist in their capture. The ability of Alcyonium glomeratum to efficiently filter food particles from the surrounding water contributes significantly to the overall health and stability of the marine ecosystems they inhabit.