Green sea urchin

California Academy of Sciences2015-09

California Academy of Sciences

California Academy of Sciences
San Francisco, CA, United States

These colorful shapes look like the work of an artist, but they once belonged to living creatures: green sea urchins. In life, the urchin’s green spines and flesh covered these internal skeletons (called tests), and their intricate detail was hidden from view. The test functions much like our skeleton, providing support and protection for the animal’s systems.


  • Title: Green sea urchin
  • Creator: California Academy of Sciences
  • Date Created: 2015-09
  • Location: Caribbean and the Gulf of Mexico
  • Location Created: San Francisco, CA
  • External Link: Zoom in closer
  • Scientific Name: Lytechinus variegatus

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