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Blue sea star (Linckia laevigata)

Photo of Blue sea star (Linckia laevigata)

Key facts

Scientific name
Linckia laevigata
Common name
Blue sea star
Category
Echinoderms
Family
Ophidiasteridae
Genus
Linckia
Size
20–40 cm
Depth
0–60 m
IUCN status
Least concern (LC)
Danger level
Harmless
Habitats
reef, seagrass
Behaviours
solitary, slow
Ocean zones
Asian Pacific, Indian Ocean & Red Sea

Description

Linckia laevigata reaches 40 cm. Cylindrical 5-armed sea star, characteristic brilliant blue ranging from royal to turquoise (rarely pink, green or purple). Lives on reefs, lagoons and sandy bottoms across the Indo-Pacific down to 60 m. Feeds on biofilm and organic matter. Frequent host of the parasitic shrimp Thyca crystallina attached to its arms. A star of all tropical reef photography.

Photo of Blue sea star

Photo of Blue sea star (Linckia laevigata)

Frequently asked questions

How big is the Blue sea star?
Blue sea star (Linckia laevigata) reaches 20–40 cm in length.
At what depth can you find the Blue sea star?
Blue sea star is found between 0–60 m deep.
Is the Blue sea star dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Blue sea star?
IUCN status: Least concern (LC).
Where can you find the Blue sea star?
Found in: Asian Pacific, Indian Ocean & Red Sea.

Other species in the genus Linckia

  • Linckia multifora - Mottled sea star
  • Linckia guildingi - Caribbean Spindle Starfish

Other species in the family Ophidiasteridae

  • Ophidiaster ophidianus - Purple sea star
  • Hacelia attenuata - Attenuated sea star

Sources

  • Taxonomy: WoRMS (AphiaID 207610)
  • Photos: iNaturalist (CC BY-NC)
  • Distribution: GBIF (taxonKey 5187093)
  • Conservation: IUCN Red List
  • Encyclopedia: Wikipedia