Spionids [Spionidae]

Description

Spionidae is a family of polychaete worms that are characterized by their slender, elongated bodies and the presence of a pair of long, grooved palps that are used for feeding. These worms are found in a variety of marine environments, from intertidal zones to the deep sea, often burrowing into sediments. Members of this family are important ecosystem engineers, aerating the seabed and contributing to the cycling of nutrients.