Poraniopsis inflata | |
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Poraniopsis inflata | |
Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Class: | Asteroidea |
Order: | Valvatida |
Family: | Poraniidae |
Genus: | Poraniopsis |
Species: | P. inflata |
Binomial name | |
Poraniopsis inflata | |
Synonyms | |
Alexandraster inflatus Fisher, 1906 |
Poraniopsis inflata, the spiny sea star, is a species of starfish in the family Poraniidae. It is native to the Pacific Ocean and is found in deep water off the coast of North America.
Poraniopsis inflata has a somewhat inflated body and five short arms and grows to a diameter of about 16 centimetres (6.3 in). The aboral surface bears a moderate number of short conical spines with white tips. The skin colour is typically orange but can be brownish-white or white marked with violet. [2] [3]
Poraniopsis inflata feeds on sponges. [4]
Poraniopsis inflata is native to the western coast of North America. Its range extends from southeastern Alaska to San Diego, California. It is an uncommon species and is found on rocky substrates in deep water in the Monterey region. [2]
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as Asteroids due to being in the class Asteroidea. About 1,500 species of starfish occur on the seabed in all the world's oceans, from the tropics to frigid polar waters. They are found from the intertidal zone down to abyssal depths, 6,000 m (20,000 ft) below the surface.
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The common sunstar or Crossaster papposus is a species of sea star belonging to the family Solasteridae. It is found in the northern parts of both the Atlantic and the Pacific Oceans.
Poraniopsis is a genus of starfish in the family Poraniidae in the order Valvatida. Poraniopsis echinaster is the type species.
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Poraniidae is a family of starfishes in the order Valvatida.
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Trophodiscus almus is a species of starfish in the family Astropectinidae. It is found in fairly deep waters in the Sea of Okhotsk, the Sea of Japan and around the Japanese island of Hokkaido. It is very unusual among starfish in that it broods its young on its upper surface. Its common name in Japanese is "Komochi-momiji".
Bathyporania ascendens is a species of starfish in the family Poraniidae, and the only species of the genus Bathyporania. It is native to the Pacific Ocean and is found in deep water off the coast of North America.
Clavaporania fitchorum is a species of starfish in the family Poraniidae. It is the only known species of the genus Clavaporania. It is native to the South Pacific Ocean and is found in deep water off the coast of Australia.
The Pacific spiny dogfish is a common species of the Squalidae (dogfish) family of sharks and are among the most abundant species of sharks in the world. This species is closely related to Squalus acanthias and for many years they were treated as a single species. Recent research, using meristic, morphological and molecular data led to the resurrection of Pacific Spiny Dogfish as a separate species. The American Fisheries Society recommends the common name "Pacific Spiny Dogfish" for Squalus suckleyi over alternatives such as "Spotted Spiny Dogfish" and "North Pacific Spiny Dogfish" and "Spiny Dogfish" for Squalus acanthias.
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Meyenaster is a genus of starfish in the family Asteriidae. It is a monotypic genus and the only species is Meyenaster gelatinosus which was first described by the Prussian botanist and zoologist Franz Julius Ferdinand Meyen in 1834. It is found in the southeastern Pacific Ocean on the coasts of South America.