The order includes some well-known species, such as the common starfish, Asterias rubens.

The main predator is the juvenile common starfish (Asterias rubens).

In some species, including the common starfish Asterias, the bipinnaria develops directly into an adult.

The Common Starfish is to be found on rocky and gravelly substrates.

Here a swarm of common starfish are rapidly devouring the carcass of a fish.

The Common Starfish is usually orange or brown, and sometimes violet; deep-water specimens are pale.

Odontaster validus is the commonest starfish found in Antarctica.

Asteroidea (Common starfish)

Common starfish feed on mussels, crustaceans, worms and echinoderms (starfish or sea urchins)

The order includes well-known species from temperate regions, including the common starfish of North Atlantic coasts and rock pools, as well as cold-water and abyssal species.

It includes several of the best-known species of sea stars, including the (Atlantic) common starfish, Asterias rubens, and the northern Pacific seastar, Asterias amurensis.

The Common Starfish or Common Sea Star (Asterias rubens) is the most common and familiar starfish in the north-east Atlantic.

Pisaster ochraceus, generally known as the purple sea star, ochre sea star or ochre starfish, is a common starfish found among the waters of the Pacific Ocean.

At low tide, sandy areas are exposed between the rocks and these support a fauna characteristic of sediment shores including Common starfish Asterias rubens and burrowing animals such as the Razor shell Ensis arcuata, the Thin tellin Tellina fabula and the Sea potato Echinocardium cordatum.