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  2. Starfish - Wikipedia

    en.wikipedia.org/wiki/Starfish

    Starfish are also known as asteroids due to being in the class Asteroidea. About 1,900 species of starfish live on the seabed in all the world's oceans, from warm, tropical zones to frigid, polar regions. They are found from the intertidal zone down to abyssal depths, at 6,000 m (20,000 ft) below the surface. Starfish are marine invertebrates ...

  3. Oreasteridae - Wikipedia

    en.wikipedia.org/wiki/Oreasteridae

    This family contains many species of regular starfishes with usually 5 arms around a stiff, convex and often brightly colored body. Whereas some species are very easy to identify, like the "pincushion seastars" (Culcita sp.), some other can be difficult to tell apart.

  4. Asteroideae - Wikipedia

    en.wikipedia.org/wiki/Asteroideae

    Asteroideae contains plants found all over the world, many of which are shrubby. There are about 1,135 genera and 17,200 species within this subfamily; the largest genera by number of species are Helichrysum (500–600) and Artemisia (550). Asteroideae is said to date back to approximately 46–36.5 million years ago. [3]

  5. Common starfish - Wikipedia

    en.wikipedia.org/wiki/Common_starfish

    The common starfish, common sea star or sugar starfish (Asterias rubens) is the most common and familiar starfish in the north-east Atlantic.Belonging to the family Asteriidae, it has five arms and usually grows to between 10–30 cm across, although larger specimens (up to 52 cm across) are known.

  6. Asteriidae - Wikipedia

    en.wikipedia.org/wiki/Asteriidae

    The Asteriidae are a diverse family of Asteroidea (sea stars) in the order Forcipulatida. It is one of three families in the order Forcipulatida. The oldest unambiguous fossils of the family date to the Late Cretaceous. [2]

  7. Goniasteridae - Wikipedia

    en.wikipedia.org/wiki/Goniasteridae

    About 260 extant species within 70 genera are currently known, which make this family the most diverse of all the sea stars, [5] even if half of the genera are monospecific. Species belonging to the Ferdininae subfamily have been imported from Ophidiasteridae thanks to a large revision of these two families in 2017 [ 6 ]

  8. Heliasteridae - Wikipedia

    en.wikipedia.org/wiki/Heliasteridae

    2 genera, 9 species The Heliasteridae are a family of Asteroidea (sea stars) in the order Forcipulatida . It includes two genera: Heliaster from the East Pacific ( California to Chile , including offshore islands), and Labidiaster from southernmost South America, Antarctica and subantarctic oceans.

  9. Heliaster helianthus - Wikipedia

    en.wikipedia.org/wiki/Heliaster_helianthus

    Heliaster helianthus, the sun star, is a species of Asteroidea (starfish) in the family Heliasteridae. It is found in shallow water rocky habitats and in the kelp forests off the Pacific coast of Ecuador, Peru and Chile.