Galaxea
Galaxea is a genus of stony corals in the family Galaxeaidae. These corals are found in the Indo-Pacific region, typically in shallow water environments. The genus is known for its distinctive, often massive, colonies and its diverse array of colors, including shades of green, brown, and orange.
Common Names
Galaxea corals are known by a variety of common names, including:
- Galaxy coral
- Star coral
- Brain coral (for some species, due to their grooved surface)
Characteristics
Members of the genus Galaxea exhibit a number of characteristic features:
- Colony Form: Colonies are typically massive and branching, often forming large, irregular shapes. Some species are encrusting, while others are columnar or even free-living.
- Corallites: The individual coral polyps (corallites) are relatively large and prominent, with distinct walls. They are often arranged in clusters or rows, giving the coral a grooved or pitted appearance.
- Coloration: Galaxea corals display a wide range of colors, including shades of green, brown, orange, and yellow. The color can vary depending on the species, the environment, and the presence of symbiotic algae (zooxanthellae).
Environments
Galaxea corals are primarily found in shallow, tropical waters, typically in coral reefs and lagoons. They prefer environments with moderate wave action and good water quality. Some species are more tolerant of high sedimentation rates than others.
References
For further information on Galaxea corals, please refer to these reliable sources: