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Slate-pencil sea urchin (Goniocidaris tubaria) This sea urchin was about 50 mm across and was covered with short red spines and thick pale ones. Some of the spines had dark red ridges and others seemed to have broken off. This photo shows the top side (aboral).<br /> The sea urchin appeared to have died recently and was spotted along the low tide mark on the rocky ocean shore on the southern coast.<br /> Ventral view (with &#039;mouth&#039; showing) <figure class="photo"><a href="https://www.jungledragon.com/image/59832/slate-pencil_urchin_goniocidaris_tubaria.html" title="Slate-pencil urchin (Goniocidaris tubaria)"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/2767/59832_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1759968010&Signature=cCNossbLUojoOpJufbQIAqlXIdU%3D" width="200" height="150" alt="Slate-pencil urchin (Goniocidaris tubaria) This is a shot of the oral side of the same urchin as in the previous spotting. <br /> https://www.jungledragon.com/image/59831/slate-pencil_sea_urchin_goniocidaris_tubaria.html<br /> At the centre is a complex apparatus called the aristotle&#039;s lantern, partially visible as a white triangular tooth. The apparatus is made up of muscles and 5 eversible calcareous teeth and plates that help with scraping off algae from rocks and sea floor. It is so called because the apparatus is shaped like a lantern. The individual parts are beautiful and intricate. Australia,Fall,Geotagged,Goniocidaris tubaria,Slate-pencil Sea Urchin,echinoidea,sea urchin,slate-pencil urchin" /></a></figure><br /> <br /> Australia,Fall,Geotagged,Goniocidaris tubaria,Slate-pencil Sea Urchin,echinoidea,sea urchin,slate-pencil urchin Click/tap to enlarge PromotedSpecies introCountry intro

Slate-pencil sea urchin (Goniocidaris tubaria)

This sea urchin was about 50 mm across and was covered with short red spines and thick pale ones. Some of the spines had dark red ridges and others seemed to have broken off. This photo shows the top side (aboral).
The sea urchin appeared to have died recently and was spotted along the low tide mark on the rocky ocean shore on the southern coast.
Ventral view (with 'mouth' showing)

Slate-pencil urchin (Goniocidaris tubaria) This is a shot of the oral side of the same urchin as in the previous spotting. <br /> https://www.jungledragon.com/image/59831/slate-pencil_sea_urchin_goniocidaris_tubaria.html<br /> At the centre is a complex apparatus called the aristotle's lantern, partially visible as a white triangular tooth. The apparatus is made up of muscles and 5 eversible calcareous teeth and plates that help with scraping off algae from rocks and sea floor. It is so called because the apparatus is shaped like a lantern. The individual parts are beautiful and intricate. Australia,Fall,Geotagged,Goniocidaris tubaria,Slate-pencil Sea Urchin,echinoidea,sea urchin,slate-pencil urchin


    comments (1)

  1. View Ferdy Christant's profile
    Ferdy Christant
    Lion
    View Lion class
    Beautiful find, and thank you for taking the time to identify and describe it! Posted 7 years ago

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The Slate-pencil Sea Urchin

Goniocidaris tubaria is a sea urchin from the Cidaridae family.

Info 2 0
Similar species: Pencil Urchins
Species identified by Christine Young
View Leuba Ridgway's profile

By Leuba Ridgway

All rights reserved
Uploaded May 9, 2018. Captured May 6, 2018 11:30 in 371 Ventnor Beach Rd, Ventnor VIC 3922, Australia.
country flag of Australia Explore Australia 13,072 4,173 3
  • SZ-10
  • f/3.7
  • 10/5000s
  • ISO64
  • 10.99mm
Captured in the fall. More fall photos.

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