Noduled Sea Star

Fromia nodosa

The Noduled Sea Star features five triangular arms that radiate from a central disc, with a maximum diameter of 10 cm. Its coloration can vary from reddish to bluish or orange, and it is typically covered with large, embossed creamy plates that are slightly angular at the top. These plates may leave a pentagonal area on the central disc exposed, although they can also cover it completely. Differentiating this species from similar ones like Fromia monilis and Fromia heffernani can be challenging; F. monilis lacks relief plates, while F. heffernani has more rounded plates lining the arms and differing geographic distributions. This starfish inhabits the tropical waters of the Indian Ocean, particularly from Seychelles to the Maldives, where it is relatively common. It can be found at depths ranging from the surface down to 35 meters, typically residing in various marine habitats. The Noduled Sea Star is nocturnal, primarily feeding on bivalve molluscs, corals, detritus, and microalgae. Its feeding process involves external digestion, where it egests its stomach to break down food externally. Diving encounters with the Noduled Sea Star are often rewarding, as divers may observe its unique coloration and distinctive arm structure.