Protoreaster nodosus
| Horned sea star | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Asteroidea |
| Order: | Valvatida |
| Family: | Oreasteridae |
| Genus: | Protoreaster |
| Species: | P. nodosus |
| Binomial name | |
| Protoreaster nodosus | |
Protoreaster nodosus, commonly known as the horned starfish or chocolate chip starfish, is a species of sea star found in the warm, shallow waters of the Indo-Pacific region. They are sometimes seen in the marine aquarium trade or dried and sold as curios.