Astropecten

Astropecten is a genus of sea stars belonging to the family Astropectinidae. These starfish are commonly referred to as “sand stars” due to their preference for sandy habitats. They are characterized by their five-pointed, flat, and often slender body shape. They are widespread across the globe, inhabiting a variety of marine environments, from shallow coastal waters to deeper oceanic depths.

Astropecten latespinosus

Astropecten andersoni

Astropecten armatus

Sand Sifting Starfish, Indo-pacific Comb Starfish – Astropecten polyacanthus

Astropecten vappa

Common Names

Astropecten species are often referred to as "sand stars" due to their favored habitat. However, other common names, like "five-rayed star" and "starfish," are also used.

Characteristics

Astropecten sea stars possess several distinctive characteristics:

  • Five arms: They typically have five arms, though some species may exhibit slight variations.
  • Flat body: Their body is flattened and often disk-shaped.
  • Slender arms: The arms are relatively slender compared to other sea star species.
  • Spines: The body surface is covered in small, scattered spines, which contribute to their rough texture.
  • Tube feet: They possess tube feet located on the underside of their arms, which they use for locomotion and feeding.

Environments

Astropecten species are found in a range of marine environments, including:

  • Sandy bottoms: They prefer sandy substrates and are commonly found in shallow coastal areas.
  • Muddy bottoms: Some species can tolerate muddy environments.
  • Coral reefs: They may also inhabit coral reef ecosystems.
  • Deep-sea habitats: Certain species are adapted to living in deeper oceanic waters.

References

For further information on Astropecten, consult the following resources: