long-armed brittle star

The long-armed brittle star is a species of marine invertebrate belonging to the subclass Ophiuroidea within the phylum Echinodermata. These creatures are characterized by their small, disk-shaped bodies and long, slender arms that are distinct from the body. These arms, typically five in number, are prone to breaking off but can regenerate. The long-armed brittle star (Amphipholis squamata) is a common species, often grayish or bluish and notably luminescent. They inhabit various marine environments, frequently at considerable depths, and are typically found hiding during the day and emerging at night to feed on small organisms or detritus.1