Leptasterias

Leptasterias is a genus of sea stars, also known as starfish, found in the Northern Hemisphere. They are characterized by their five arms, which are often slender and tapered. This genus is well known for its species diversity, with members found in a range of habitats, from shallow intertidal zones to deep-sea environments.

Seastar – Leptasterias pusilla

Common Names

While "Leptasterias" is the scientific name for this genus, common names vary depending on the specific species and location. Some common names include:

  • Slender Starfish
  • Spiny Starfish
  • Northern Sea Star

Characteristics

Leptasterias species share several key characteristics:

  • Five Arms: They typically have five arms, though some species may exhibit slight variations.
  • Slender Arms: The arms are generally slender and taper towards the tips.
  • Spines: The body surface is covered in spines, which can be of varying sizes and shapes depending on the species.
  • Coloration: They come in a range of colors, including brown, red, orange, and yellow.
  • Size: Most Leptasterias species are relatively small, with adults reaching lengths of 5-10 cm (2-4 inches).

Environments

Leptasterias species can be found in a variety of marine habitats, including:

  • Intertidal Zones: Some species thrive in the intertidal zone, where they are exposed to fluctuating tides.
  • Subtidal Zones: Others live in subtidal zones, below the low tide mark, and often prefer rocky substrates.
  • Deep Sea: Certain Leptasterias species inhabit deeper waters, sometimes reaching depths of hundreds or even thousands of meters.

References

For further information on the genus Leptasterias, you can consult these reliable sources: