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Starfish are also known as asteroids because they form the taxonomic class Asteroidea (/ ˌæstəˈrɔɪdiə /). About 1,900 species of starfish live on the seabed, and are found in all the world's oceans, from …

For over 25 years SAI has been a thought leader and provider of aquatic safety and training solutions. With an expansive U.S. national and global reach, SAI is prepared to deliver exceptional learning …

Sep 10, 2025 · Starfish, also called sea stars, are echinoderms that constitute the class Asteroidea. As their name suggests, they have a characteristically star-like body, with most species having five arms …

Sea stars are ravenous carnivores with a special adaptation for consuming prey outside their bodies. Their stomach can be extended out through their mouth to engulf and digest prey. This feature …

May 9, 2025 · Starfish (or sea stars) are beautiful marine animals found in a variety of colors, shapes, and sizes. All starfish resemble stars, and though the most common have only five arms, some of …

Sep 27, 2025 · Discover amazing starfish facts — their anatomy, regeneration, species, diet, habitat, and role in ocean ecosystems worldwide.

A starfish, also sometimes known as a sea star, is a star-shaped echinoderm commonly found throughout the world’s oceans.

Dec 26, 2025 · For other echinoderms of similar name, see brittle star; feather star. For a species of special interest, see crown-of-thorns starfish. This article was most recently revised and updated by …

Starfish, part of the Phylum Echinodermata and Class Asteroidea, are broadly divided into two subclasses: Asterozoa and Ophiuroidea. They are diverse creatures, with about 1,500 to 2,000 …