Goniocidaris tubaria

Thorny Sea Urchin




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  • Goniocidaris tubaria Thorny Sea Urchin

    06 May 2018-38.5,145.2Leuba Ridgway

    This slate-pencil sea urchin would have been about 50 mm across. It had probably just died and been washed ashore - still had most of its short thick primary spines and smaller needle like secondary spines. The primary photo is of the top side (aboral) and the second is of the underside (oral) with the mouth in the middle. Just visible in pic 4 is a triangular white tooth-like structure in the centre which is part of a complex dental apparatus called the "Aristotle's Lantern". The shorter spines were a deep red and the thicker ones were paler, some with deep red ridges. It is possible that a few long ones were broken at this stage. Spotted on the rocky ocean shore -low tide mark on the south coast. (Phillip Island)

    5af2eb79ed2a8929e70000f6

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    Cathy Powers, Michael Gooch, and Mark Ridgway starred this.

    1. Cathy Powers  Leuba - if I could triple star this, I would. Great compilation of images and information.

      Reply • 10 May

      • Leuba Ridgway  Thank you Cathy. I was really excited to find this one with spines intact. I absolutely love marine invertebrates.

        Reply • 27 May

    2. David Francis  Goniocidaris tubaria added. Another great marine species for NS. Maybe we should start a marine species group.(Seashore Species?)

      Reply • 11 May

      • Leuba Ridgway  Thank you David. Sorry for the delayed response. We should start a group. i am sure there would be others with some good specimens. I have a few more to post..

        Reply • 27 May