schizasterids

Schizasterids are a group of echinoderms, specifically sea stars, that belong to the order Schizasteroida. They are characterized by their unique body structure and feeding habits. Schizasterids have a star-shaped body with five or more arms, which are typically long and slender. Their oral surface, or the side of the body that faces downwards when the sea star is on the sea floor, is covered in tube feet, which are used for locomotion and feeding.

One of the most distinctive features of schizasterids is their feeding mechanism. They use their tube feet to create a water current that draws food particles towards their mouth. This is known as suspension feeding. Schizasterids are also known for their ability to regenerate lost arms, a process that involves the formation of new tube feet and other structures.

Schizasterids are found in a variety of marine environments, including coral reefs, rocky shores, and deep-sea habitats. They play an important role in their ecosystems by helping to control the abundance of algae and other small organisms. Some species of schizasterids are also of commercial interest due to their valuable shell, which is used in jewelry and other decorative items.

The taxonomy of schizasterids is complex, with many species and subspecies described in the scientific literature. They are typically classified in the family Schizasteridae, which includes several genera. Some of the most well-known schizasterids include the species Schizaster asterias and Schizaster planus.