| Astrosarkus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Asteroidea |
| Order: | Valvatida |
| Family: | Oreasteridae |
| Genus: | Astrosarkus Mah, 2003 |
| Species: | A. idipi |
| Binomial name | |
| Astrosarkus idipi Mah, 2003 | |
Astrosarkus idipi is a species of sea stars in the family Oreasteridae. It is the sole species in the genus Astrosarkus. It is sometimes referred to as a Pumpkin sea star.
It is a big sea star with a subpentagonal and very plump body. It is quite recognizable because of its bright orange color, and globally displays the color, texture and size of a pumpkin. It is thus a very big star, measuring approximately 30 cm (12 in) in diameter for 10 cm (4 in) high. The lower face is white dirtied with orange, and crossed by 5 ambulacral grooves. Inside the body, the skeleton is strikingly reduced: the main part of the mass of the star is muscular.
This sea star lives in the sub-reef zone, between 67 and 200 m (220 and 656 ft) deep, and seems rather widely distributed in the Indo-pacific, From Reunion island to Samoa. However, it is still poorly known, and only 6 specimens have been collected to this day.
Along with some other deep-sea creatures, this sea star has been used in Japan as a model for a sushi-shaped gachapon toy. There, the species is referred to as ryugu sakura hitode, which means "dragon palace cherry blossom sea star".
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