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  1. Ascidiacea
    AscidiaceaClass of invertebrate feeders
    TypesCharacteristicsFactsHabitatDietEvolutionReproductionAnatomy
     
  2. Wikipedia
    https://en.wikipedia.org › wiki › Ascidiacea

    Ascidiacea - Wikipedia

    • Ascidiacea, commonly known as the ascidians or sea squirts, is a paraphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" made of a polysaccharide. Ascidians are found all over the world, usually in shallow water with salinities over 2.5%. While members of the Thaliacea (sal… See more

    Anatomy

    Sea squirts are rounded or cylindrical animals ranging from about 0.5 to 10 cm (0.20 to 3.94 in) in size. One end of the body is always firmly fixed to rock, coral, or some similar solid surface. The lower surface is p… See more

    Life history

    Almost all ascidians are hermaphrodites and conspicuous mature ascidians are sessile. The gonads are located in the abdomen or postabdomen, and include one testis and one ovary, each of which opens via a duct into the clo… See more

    Ascidians - Urochordata - The Australian Museum
    Ascidians belong to the subphylum Urochordata - one of the major groups of the phylum Chordata, which includes the vertebrates (fishes, amphibians, reptiles, birds and mammals). Sydney has over …
    The Australian Museum · https://australian.mus…
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  1. Wikipedia
    https://en.wikipedia.org › wiki › Ascidia

    Ascidia - Wikipedia

     
  2. Wikipedia
    https://en.wikipedia.org › wiki › Tunicate

    Tunicate - Wikipedia

    Various species of ascidians, the most well-known class of tunicates, are commonly known as sea squirts, sea pork, sea livers, or sea tulips. The earliest probable species of tunicate appears in the fossil record in the early Cambrian …

  3. Britannica
    https://www.britannica.com › animal › tunic…

    Tunicate | Anatomy, Habitat & Adaptations | Britannica

    Dec 3, 2024 · The tunicates are divided into three classes: Ascidiacea (ascidians, or sea squirts), Appendicularia (Larvacea), and Thaliacea. Ascidians are largely benthic animals. They often form colonies, comprising a few to many …

  4. WoRMS
    https://www.marinespecies.org › ascidiacea

    Ascidiacea World Database - WoRMS - World Register of Marine …

  5. The Australian Museum
    https://australian.museum › ... › ascidians …

    Ascidians - Urochordata - The Australian Museum

    Ascidians belong to the subphylum Urochordata - one of the major groups of the phylum Chordata, which includes the vertebrates (fishes, amphibians, reptiles, birds and mammals). Sydney has over 80 species of ascidians.

  6. People also ask
    How many ascidians are there?
    They comprise approximately 3000 described species found in all marine habitats from shallow water to the deep sea – . The group was initially difficult for zoologists to classify systematically, although ascidians were recognized as a distinct group as early as Aristotle .

    Global Diversity of Ascidiacea - PMC

    pmc.ncbi.nlm.nih.gov
    What are ascidians characterized by?
    Ascidians are characterized by a tough outer test or "tunic" made of the polysaccharide cellulose. Ascidians are found all over the world, usually in shallow water with salinities over 2.5%.

    Ascidiacea - Wikipedia

    en.wikipedia.org
    Where do ascidians come from?
    Various ascidians are eaten by humans around the world as delicacies. Sea pineapple (Halocynthia roretzi) is cultivated in Japan (hoya, maboya) and Korea (meongge). When served raw, they have a chewy texture and peculiar flavor likened to "rubber dipped in ammonia" which has been attributed to a naturally occurring chemical known as cynthiaol.

    Ascidiacea - Wikipedia

    en.wikipedia.org
    How many species of ascidians are there in Sydney?
    Sydney has over 80 species of ascidians. Ascidians belong to the subphylum Urochordata - one of the major groups of the phylum Chordata, which includes the vertebrates (fishes, amphibians, reptiles, birds and mammals).

    Ascidians - Urochordata - The Australian Museum

    australian.museum
    Are ascidians a phylum?
    Virginia Vanni, Loriano Ballarin, Fabio Gasparini, Anna Peronato, and Lucia Manni. Published online: April 1, 2022. Ascidians are sessile tunicates, that is, marine animals belonging to the phylum Chordata and considered the sister group of vertebrates. They are widespread in all the seas, constituting abundant communities in various ecosystems.

    Studying Regeneration in Ascidians: An Historical Overview

    ncbi.nlm.nih.gov
    Why are ascidians a problem?
    Unwanted populations on docks, ship hulls, and farmed shellfish cause significant economic problems. Ascidians are the natural prey for some animals, including nudibranchs, flatworms, molluscs, rock crabs, sea stars and sea otters.

    Ascidiacea - an overview | ScienceDirect Topics

    sciencedirect.com
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  7. ScienceDirect
    https://www.sciencedirect.com › topics › biochemistry...

    Ascidiacea - an overview | ScienceDirect Topics

  8. nih.gov
    https://pmc.ncbi.nlm.nih.gov › articles

    Global Diversity of Ascidiacea - PMC - PubMed …

    Ascidians (Phylum Chordata, Class Ascidiacea), or sea squirts, are the largest and most diverse class of the sub-phylum Tunicata (also known as Urochordata). They comprise approximately 3000 described species found in all marine …

  9. wikimedia.org
    https://species.wikimedia.org › wiki › Ascidiacea

    Ascidiacea - Wikispecies - Wikimedia

  10. National Center for Biotechnology Information
    https://www.ncbi.nlm.nih.gov › books

    Studying Regeneration in Ascidians: An Historical …

    Apr 1, 2022 · Ascidians are sessile tunicates, that is, marine animals belonging to the phylum Chordata and considered the sister group of vertebrates. They are widespread in all the seas, constituting abundant communities in various …

  11. The Australian Museum
    https://australian.museum › learn › animal…

    Sea squirts and sea tulips - The Australian Museum

    Sea squirts and sea tulips are collectively known as ascidians (Ancient Greek: askidion = wineskin), characterised by a tough outer “tunic” made of cellulose. Ascidians are the evolutionary link between invertebrates and vertebrates.

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  12. Ocean Info
    https://oceaninfo.com › animals › sea-squirt

    Sea Squirts (Ascidians): Ocean's Organic Filters - Ocean Info

  13. wikimedia.org
    https://commons.wikimedia.org › wiki › Category:Ascidiacea

    Category : Ascidiacea - Wikimedia

  14. Wikipedia
    https://en.wikipedia.org › wiki › Ascidiidae

    Ascidiidae - Wikipedia

  15. Wikipedia
    https://en.wikipedia.org › wiki › Ciona_intestinalis

    Ciona intestinalis - Wikipedia

  16. ScienceDirect
    https://www.sciencedirect.com › topics › agricultural...

    Ascidiacea - an overview | ScienceDirect Topics

  17. Wikiwand
    https://www.wikiwand.com › en › articles › Ascidian

    Ascidiacea - Wikiwand

  18. Wikipedia
    https://en.wikipedia.org › wiki › Botrylloides_violaceus

    Botrylloides violaceus - Wikipedia

  19. ウィキペディア
    https://ja.wikipedia.org › wiki › ホヤ

    ホヤ - Wikipedia

  20. Wikiwand
    https://www.wikiwand.com › en › articles › Ascidiacea

    Ascidiacea - Wikiwand