Anthelia
Anthelia is a genus of soft corals in the family Xeniidae. It is characterized by its branching growth form and its ability to retract its polyps when disturbed. Anthelia species are commonly found in tropical and subtropical waters around the world, often inhabiting coral reefs and rocky outcrops.
Common Names
Anthelia species are commonly referred to as "anthellia corals" or "branching xenias."
Characteristics
Anthelia corals are characterized by their branching growth form. Their colonies consist of numerous polyps that are connected by a network of stolons. The polyps are typically small and have eight tentacles that are covered in stinging nematocysts. These nematocysts are used to capture prey, which includes plankton and other small invertebrates.
Anthelia corals are known for their ability to retract their polyps when disturbed. This is a defensive mechanism that helps to protect the polyps from predators. When the polyps are retracted, the colony appears to be a mass of fleshy tissue. When the polyps are extended, the colony becomes a network of delicate branches.
Environments
Anthelia corals are found in a variety of marine environments, including coral reefs, rocky outcrops, and seagrass beds. They are typically found in shallow water, where they have access to sunlight. Anthelia corals are also known to tolerate a wide range of water conditions, including variations in temperature, salinity, and nutrient levels.
References
[1] World Register of Marine Species
[2] Australian Institute of Marine Science