corallium

Corallium is a genus of marine bivalve mollusks, commonly known as the sea fan or sea feather. These animals are characterized by their fan-like or feather-like shells, which are composed of calcium carbonate. Corallium species are found in shallow tropical and subtropical waters, typically attached to hard substrates such as rocks, corals, or other mollusks. They are sessile, meaning they remain in one place throughout their lives.

The genus Corallium includes several species, with the most well-known being Corallium rubrum, often referred to as the red sea fan. This species is recognized for its vibrant red color, which is due to the presence of the pigment erythrosine. The shells of Corallium species are often used as ornaments and decorative items in jewelry and art.

Corallium species play an important role in their ecosystems by providing habitat and shelter for various marine organisms. They also contribute to the overall biodiversity of their environments. However, like many marine species, Corallium is threatened by human activities such as pollution, overfishing, and habitat destruction. Conservation efforts are underway to protect these valuable marine organisms and their habitats.