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The Starfish category encompasses various species of marine invertebrates, also known as sea stars. They are characterized by their radial symmetry and distinct five-pointed arms that radiate from a central disc. These creatures possess a unique ability to regenerate lost limbs, making them fascinating subjects for scientific study. Starfish inhabit diverse marine habitats worldwide, including coral reefs, tidal pools, and the deep sea. They play a crucial role in maintaining the health of marine ecosystems by consuming algae and other organisms that can overgrow and smother corals or seagrasses. Despite their name, starfish are not actually fish; instead, they belong to the phylum Echinodermata, which also includes sea urchins and sand dollars.