Anasterias
Anasterias is a genus of starfish in the family Asteriidae, commonly known as the “sea stars.” This genus is characterized by its five-rayed, star-shaped body, with arms that are usually short and thick. They are typically found in cold, shallow water environments along the coasts of the northern Pacific Ocean. Anasterias are opportunistic feeders, consuming a variety of small invertebrates, including bivalves, barnacles, and polychaetes. These starfish play an important role in the marine ecosystem as both predators and scavengers.
Common Names
Common names for Anasterias include "sea star" and "starfish." The specific species within the genus may have additional common names.
Characteristics
Anasterias species share a number of distinctive characteristics:
- Five-rayed, star-shaped body
- Short, thick arms
- Spiny skin, often with a velvety texture
- Brightly colored, typically shades of orange, red, or purple
- Multiple rows of tube feet along the ventral surface
- Ability to regenerate lost arms
Environment
Anasterias species are typically found in cold, shallow water environments along the coasts of the northern Pacific Ocean. They prefer rocky intertidal zones, kelp forests, and sandy bottoms.
References
For more detailed information on Anasterias, consult the following sources: