Starfish are found in salt waters all around the world. More than 2,000 species of the echinoderms are abundant in the Atlantic, Arctic, Indian and Pacific Oceans, and some are found in the Mediterranean Sea.
A close relative of the sea urchin and sand dollar, the starfish is found at almost every depth of the sea, though they most often reside in shallower waters. Bays, docks, kelp forests, surf- and sea-grass beds, tide pools and rugged coastlines are all hotspots for the creatures, where they use suctioned tube feet to pry open clams and oysters. Their coloring camouflages them from potential predators.