Solaster
Solaster is a genus of starfish belonging to the family Solasteridae. These starfish, commonly known as sun stars, are characterized by their distinctive radial symmetry and numerous arms, ranging from 6 to 15 in some species. They are found in a variety of marine environments, primarily in the Northern Hemisphere, and are known for their striking appearance and predatory behavior.
Common Names
Members of the genus Solaster are commonly referred to as "sun stars" due to their radiating arms resembling the rays of the sun. They are also known as "starfish" or "sea stars" more broadly, reflecting their classification within the phylum Echinodermata.
Characteristics
Solaster starfish exhibit several defining characteristics:
- Radial symmetry: Their bodies are arranged around a central disc, with arms radiating outward.
- Numerous arms: Solaster species typically have 6 to 15 arms, although some may have more.
- Spines: The arms are covered in small, sharp spines that provide protection and aid in locomotion.
- Tube feet: Like other starfish, they have tube feet on their underside, which they use for movement and feeding.
- Bright colors: Solaster starfish often display vivid colors, including shades of orange, red, yellow, and purple.
Environment
Solaster starfish are typically found in cold, temperate waters, primarily in the Northern Hemisphere. They prefer rocky or sandy bottoms and may inhabit depths ranging from shallow intertidal zones to the deep sea.
References
For further information and detailed descriptions of specific Solaster species, consult the following resources: