What is the scientific classification of starfish?
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Q:

What is the scientific classification of starfish?

A:

Quick Answer

Starfish are part of the phylum Echinoderm and are most closely related to sea cucumbers, brittle stars and sea urchins. They are in the kingdom Animalia, class Asteroidea, and can be any of a variety of different orders, since it is estimated that there are more than 2,000 different star-shaped sea critters known to man.

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Full Answer

Starfish are not really fish at all, and scientists refer to them as sea stars. They are invertebrates with hundreds of tube feet that they use for help with movement and feeding. Instead of a backbone, the starfish has a hard plate under its skin that gives its body structure and support.

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    Do starfish have brains?

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    Starfish lack an actual brain and instead use a complex nervous system to sense the environment. Nerves run from its mouth down each arm to eyespots at the ends of those arms. This allows starfish to distinguish between light and dark.

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    What is the respiratory system of a starfish?

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    Starfish take in oxygen and dispel carbon dioxide through their tube feet, thin skin and a hole located on top of their body, and circulate the gases throughout their body using a water-vascular system. Their respiratory system is rudimentary and sometimes nonexistent.

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    What part of the ocean do starfish live in?

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    Starfish typically reside in shallow waters along rocky coasts, according to The Columbia Encyclopedia. The starfish is an echinoderm of the Asteroidae class. Around 2,000 species of starfish exist across the planet.

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    What phylum is the starfish in?

    A:

    Starfish belong to the phylum Echinodermata. The phylum name means "spiny skin" in Greek. All echinoderms are marine invertebrates with radial symmetry and water vascular systems that allow locomotion.

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