Sea urchin

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Alive[edit]

  • Paracentrotus lividus

    Paracentrotus lividus

  • Echinus Melo (water melon urchin) Alghero Sardinia

    Echinus Melo (water melon urchin) Alghero Sardinia

  • Arbacia lixula Croatia

    Arbacia lixula Croatia

  • Diadema antillarum

    Diadema antillarum

  • Strongylocentrotus purpuratus (Purple sea urchin)

    Strongylocentrotus purpuratus (Purple sea urchin)

  • Sea urchins, soft coral, and seastars on the floor of McMurdo Sound (January 11 2005).jpg
  • Micropyga.jpg
  • Seaurchin.jpg
  • Erizo de mar violáceo (Sphaerechinus granularis), Madeira, Portugal, 2019-05-31, DD 36.jpg
  • Red sea urchin 3.jpg
  • Malapascua sea urchin (Echinothrix calamaris).jpg
  • Red Sea Urchin by Lawson Harbour.png
  • Sea urchin at Aguirangan.jpg
  • Black sea urchin.jpg
  • Sea urchin for sale.jpg
  • Sea urchin on deep reef DSC00056.JPG
  • Centrostephanus coronatus (juvenile).jpg
  • Centrostephanus coronatus.jpg
  • Woda-5 ubt.jpeg
  • Woda-3 ubt.jpeg
  • Seaurchin 300.jpg
  • Sea Urchin (49343616).jpeg
  • Sanc0521.jpg
  • Sea urchin 1.jpg

Test (Skeleton)[edit]

  •  Colobocentrotus atratus

    Valued image seal.svg Colobocentrotus atratus

  •   Echinodiscus tenuissimus

    Valued image seal.svg  Echinodiscus tenuissimus

  • Echinus esculentus

    Echinus esculentus

  •   Paracentrotus lividus

    Valued image seal.svg  Paracentrotus lividus

Eggs[edit]

Fossil[edit]

  •  Acrosalenia hemicidaroides

    Valued image seal.svg Acrosalenia hemicidaroides

  •  Micraster leskei

    Valued image seal.svg Micraster leskei

Illustration[edit]

  • Pluteus

    Pluteus

  • NSRW Sea-Urchin.png
  • From "On the Genesis of Species"

    From "On the Genesis of Species"

  • Pedicellariae enlarged.

    Pedicellariae enlarged.

Video[edit]

  • Time-lapse video of 16-cell purple urchin embryo

Divers[edit]

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