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  1. Wikipedia
    https://en.wikipedia.org/wiki/Sea_pen

    Sea pen - Wikipedia

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    Phosphorescent sea pen | The Wildlife Trusts
    wildlifetrusts.org
    This Is Why Sea Pens Are Not The Saving Grace For Orcas …
    awesomeocean.com
    What is a Sea Pen? | Oceans | BBC Earth - YouTube
    youtube.com
    Aquarium Invertebrates: Sea Pens - Reefs.com
    reefs.com
    Sea pen | Animals | Monterey Bay Aquarium
    montereybayaquarium.org
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  2. Images of Pennatulacea

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    Pennatula aculeata (Sea Pen), order Pennatulacea, subclass Octocorallia ...
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    Sea Pens - Pennatulacea
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    Sea Pens - Pennatulacea
    ncei.noaa.gov
    Pennatula sp.
    pinterest.es
    Sea pen. Pluma de mar Clase : Anthozoa Orden: pennatulacea | Beautiful ...
    dafni.com
    Pennatulacea
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  3. Wikipedia
    https://nl.wikipedia.org/wiki/Pennatulacea

    Pennatulacea - Wikipedia

  4. Britannica
    https://www.britannica.com/animal/sea-pen

    Sea pen | Cnidarian, Anthozoan & Polyp | Britannica

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    Structure of Sea Pen (Pennatula) | Zoology - Biology …
    biologydiscussion.com
    Colorful Sea Pens Decorate Ocean Floor | Live Science
    livescience.com
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  5. People also ask
    What are pennatulacean octocorals?
    This paper is part of the PLoS ONE review collection of WoRMS (the Worldwide Register of Marine Species), on the global diversity of marine species, and treats the pennatulacean octocorals, a group of cnidarians commonly referred to as sea pens or sea feathers. This also includes sea pansies, some sea whips, and various vermiform taxa.

    The Global Diversity of Sea Pens (Cnidaria: Octocorallia: Pennatulacea)

    ncbi.nlm.nih.gov
    What is the phylogeny of Pennatulacea?
    Preliminary assessment of the phylogeny of Pennatulacea (Anthozoa: Octocorallia), with a reevaluation of Ediacaran frond-like fossils, and a synopsis of the history of evolutionary thought regarding the sea pens. Proceedings of the Sixth International Conference on Coelenterate Biology, 497-509 additional source Belcik, F. P. (1977).

    Pennatula Linnaeus, 1758 - World Register of Marine Species

    marinespecies.org
    Do pennatulaceans resemble pens?
    Many pennatulaceans, however, do not resemble pens. The sea pansy, Renilla, for example, found along the Pacific and Atlantic coasts of North America, is a flattened kidney-shaped plate consisting of two fused halves. All the polyps are on the upper side.

    Sea pen | Cnidarian, Anthozoan & Polyp | Britannica

    britannica.com
    Where do pennatulaceans live?
    An appreciable bottom current is necessary for procuring sufficient food and hence deep-sea pennatulaceans are often most common in more active areas such as sea mounts, escarpments, continental slopes, and along the bases of ridges – .

    The Global Diversity of Sea Pens (Cnidaria: Octocorallia: Pennatulacea)

    ncbi.nlm.nih.gov
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  6. WoRMS
    https://www.marinespecies.org/aphia.php?p=taxdetails&id=1367

    WoRMS - World Register of Marine Species - Pennatulacea

  7. University of California Museum of Paleontology
    https://ucmp.berkeley.edu/cnidaria/pennatulacea.html

    Introduction to the Pennatulacea - University of California …

  8. sea pen
    noun
    1. a marine coelenterate related to the corals, forming a feather-shaped colony with a horny or calcareous skeleton.
    More about sea pen
  9. National Center for Biotechnology Information
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3146507

    The Global Diversity of Sea Pens (Cnidaria: Octocorallia: …

  10. Animalia
    https://animalia.bio/pennatulacea

    Pennatulacea - Animalia

  11. WoRMS
    https://www.marinespecies.org/aphia.php?p=taxdetails&id=128495

    Pennatula Linnaeus, 1758 - World Register of Marine Species

  12. ScienceDirect
    https://www.sciencedirect.com/science/article/abs/pii/S00244082857000…

    Living genera of sea pens (Coelenterata: Octocorallia: …

  13. plos.org
    https://journals.plos.org/plosone/article/file?id=10.1371/jou… · PDF file

    The Global Diversity of Sea Pens (Cnidaria: Octocorallia: …