What is a "starfish"?

A starfish, also known as a sea star, is a fascinating marine creature characterized by its radial symmetry and distinctive star-like shape. They belong to the phylum Echinodermata and are found in various oceans around the world. Starfish have a central disk from which multiple arms radiate, typically five but sometimes more. These arms are often covered with small tube feet that aid in locomotion and capturing prey. Starfish are known for their ability to regenerate lost limbs, and some species can even regenerate an entire body from a single arm. They feed on a wide range of organisms, including mollusks, crustaceans, and even dead organic matter. Starfish play a crucial role in marine ecosystems as both predators and scavengers, and their presence adds to the diversity and beauty of the underwater world.